CN113306087A

CN113306087A - Demoulding assembly of injection mould

Info

Publication number: CN113306087A
Application number: CN202110584956.0A
Authority: CN
Inventors: 赵诚伟; 蒋荷军; 陈源; 马振伟; 张存建; 朱博文; 付振东; 朱博
Original assignee: Henan Haoyang New Energy Technology Co ltd
Current assignee: Tianneng Group Henan Energy Technology Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-08-27
Anticipated expiration: 2041-05-27
Also published as: CN113306087B

Abstract

The invention discloses a demoulding assembly of an injection mould, and relates to the technical field of injection moulds. The invention comprises a fixed die and a movable die; the fixed die comprises a fixed die main body; the movable die comprises a movable die main body; a male die is arranged on one surface of the movable die main body, which is opposite to the fixed die main body; a cavity is formed in the fixed die main body corresponding to the position of the male die; auxiliary demoulding supporting rods are symmetrically arranged on one opposite side of the movable mould main body and the fixed mould main body; one end of the auxiliary demoulding supporting rod, which is close to the fixed mould main body, is rotatably connected with a rotating block; the rotating block is used for being matched with the auxiliary demoulding supporting rod to clamp a formed workpiece out of the fixed die main body when the movable die main body finishes demoulding after injection moulding. According to the invention, the rotating block and the auxiliary demoulding support rod which are rotatably connected are arranged, so that a formed workpiece can be effectively clamped out through the matching of the male die, the auxiliary demoulding support rod and the rotating block after the injection molding is finished, the problem that the workpiece is sucked in a cavity and needs to be stopped and taken out due to the suction cavity possibly generated during the mould opening is effectively avoided, and the high-speed injection molding machine has high practical value.

Description

Demoulding assembly of injection mould

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to a demolding assembly of an injection mold.

Background

The mold is an important development industry in the society at present, and the quality of the mold can reflect the product quality of each industry and even the development condition of a country. Among a plurality of mould types, the injection mould is one of possessing a large amount of markets, and along with the demand of various plastic products, the injection mould is also developing at a rapid pace, and current injection mould automation level is higher and higher, and the precision is also higher and higher, can be along with the improvement of precision and automation level, and the structure of mould also becomes very complicated, and complicated structure when the operation, takes place mutual wearing and tearing easily, reduces life, indirect improvement use cost.

When the existing injection mold is used for producing a cylindrical workpiece with a single-side opening, suction is very easy to generate when the mold is opened, and a workpiece suction cavity is sucked in a cavity, so that the condition of stopping for cleaning is caused.

The prior published patent document (publication number CN110948804A) discloses an injection mold and a demolding mechanism thereof, belonging to the technical field of injection molds, and comprising a mold core component, an inclined top seat, an elastic inclined top oscillating bar and a supporting block component. The inclined ejecting seat can move relative to the mold core in the mold opening and closing direction, and the inclined ejecting oscillating bar comprises an inclined ejecting head part, an inclined ejecting foot part and an inclined ejecting body part; the supporting block assembly comprises a guide middle plate and a supporting side plate, and a sliding space for sliding of the inclined top body part is formed between the guide middle plate and the supporting side plate; the inclined ejecting body part is provided with a first contact surface, and the surface of one side of the supporting side plate facing the guide middle plate is provided with a first contact matching surface which is used for abutting against the first contact surface when the mold is opened so as to drive the inclined ejecting head part to swing towards one side of the guide middle plate. The demoulding mechanism provided by the invention has the advantages of simple structure, small occupied mould space, strong applicability, convenience in disassembly and assembly and low manufacturing cost, has the functions of ejecting products and demoulding and core pulling, and cannot well solve the problem of cavity suction generated during processing of cylindrical workpieces. Therefore, a mold release assembly for an injection mold is needed to solve the above problems.

Disclosure of Invention

The present invention is directed to a stripper assembly for an injection mold, which is designed to solve the problems set forth above in the background art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a demoulding component of an injection mould, which comprises a fixed mould and a movable mould; the fixed die comprises a fixed die main body; the movable die comprises a movable die main body; a male die is arranged on one surface of the movable die main body, which is opposite to the fixed die main body; a cavity is formed in the fixed die main body corresponding to the position of the male die; auxiliary demoulding supporting rods are symmetrically arranged on one surface of the movable mould main body, which is opposite to the fixed mould main body; one end of the auxiliary demoulding supporting rod, which is close to the fixed mould main body, is rotatably connected with a rotating block; the rotating block is used for being matched with the auxiliary demoulding supporting rod to clamp a formed workpiece out of the fixed die main body when the movable die main body is subjected to injection moulding and is withdrawn.

Preferably, the auxiliary stripping support rods are arranged on two opposite sides of the male die; grooves are formed in the two sides of the cavity corresponding to the positions of the auxiliary demoulding supporting rods; a sunk groove is formed in the cavity corresponding to the rotating block; the auxiliary demoulding supporting rods are all provided with a through hole; a through hole is formed in the position, corresponding to the through hole of the auxiliary demoulding supporting rod connected with the movable mould main body, of the movable mould main body; an ejector rod is connected between the auxiliary demoulding supporting rods in a sliding manner; one end of the ejector rod, which is far away from the fixed die, is connected with the fixed die through a series of blocks; the series block is connected with a power supply assembly; the power supply assembly is used for supplying power to the ejector rod so as to control the rotation of the rotating block; the ejector rod moves towards one side of the fixed die within a range to rotate the rotating block to loosen the clamping of the formed workpiece on the male die; the ejector rod moves to a side far away from the fixed die until the ejector rod can be completely retracted into the auxiliary demoulding support rod.

Preferably, a torsion spring is connected between the rotating block and the auxiliary demoulding support rod; the torsion spring is used for controlling the rotating block to be always perpendicular to an included angle between the auxiliary demoulding supporting rods in the unpowered driving state; the end part of the ejector rod, which is positioned on one side of the rotating block, is provided with a fillet treatment; the fillet treatment is used for protecting the position where the rotating block abuts against the ejector rod from being scratched due to frequent rotation of the switch.

Preferably, one end of the ejector rod facing the fixed die is provided with a first rotating connecting part; the rotating block is provided with a second rotating connecting part; the first rotating connecting portion is rotatably connected with the corresponding second rotating connecting portion.

Preferably, a demoulding rod is connected on the male die in a sliding way; the demolding rod is used for ejecting a molded workpiece on the male die.

The invention has the following beneficial effects:

the rotary block and the auxiliary demoulding support rod which are rotatably connected are arranged, so that a formed workpiece can be effectively clamped out through the matching of the male die, the auxiliary demoulding support rod and the rotary block after the injection molding is finished, the problem that the workpiece is sucked in a cavity and needs to be stopped and taken out due to the suction cavity possibly generated during the die opening is effectively solved, and the rotary block has higher practical value.

The ejector rod with the round angle treatment is arranged, so that the rotating block can be effectively protected, and the smoothness in the operation process is ensured; through setting up the torsional spring, can make the turning block can effectively guarantee the centre gripping effect to the shaping work piece.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a stripper assembly of an injection mold of the present invention;

FIG. 2 is a schematic structural diagram of a movable mold;

FIG. 3 is a schematic structural diagram of a fixed mold;

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

in the drawings, the components represented by the respective reference numerals are listed below:

1-fixed die, 2-movable die, 101-fixed die body, 102-die cavity, 103-positioning groove, 104-groove, 105-sink groove, 201-movable die body, 202-male die, 203-positioning rod, 204-auxiliary demoulding support rod, 205-demoulding rod, 206-series block, 207-ejector rod, 208-rotating block, 2071-first rotating connecting part and 2081-second rotating connecting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open," "upper," "lower," "disposed," "peripheral side," "inner," "outer," "symmetrical," "bottom," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the present invention.

The first embodiment,

Referring to fig. 1-3, the present invention is a mold release assembly for an injection mold, comprising a stationary mold 1 and a movable mold 2; the fixed die comprises a fixed die main body 101; the movable mold 2 includes a movable mold main body 201; a male die 202 is arranged on one surface of the movable die main body 201 opposite to the fixed die main body 101; a cavity 102 is formed in the fixed die main body 101 corresponding to the position of the convex die 202; auxiliary demoulding supporting rods 204 are symmetrically arranged on one surface of the movable mould main body 201 opposite to the fixed mould main body 101; one end of the auxiliary demoulding supporting rod 204 close to the fixed mould main body 101 is rotatably connected with a rotating block 208; the rotating block 208 is used for clamping a formed workpiece out of the fixed die main body 101 in cooperation with the auxiliary demoulding support rod 204 when the movable die main body 201 is subjected to injection molding and is subjected to demoulding.

Wherein, the auxiliary stripping support rods 204 are arranged at two opposite sides of the male die 202; grooves 104 are formed in the positions, corresponding to the auxiliary demoulding supporting rods 204, of the two sides of the cavity 102; a sunk groove 105 is formed in the cavity 102 corresponding to the rotating block 208; the auxiliary demoulding supporting rods 204 are all provided with a through hole; a through hole is arranged on the movable mould main body 201 corresponding to the through hole of the auxiliary demoulding support rod 204 connected with the movable mould main body; a top rod 207 is connected between the auxiliary demoulding supporting rods 204 in a sliding way; one end of the ejector rod 207, which is far away from the fixed die 1, is connected through a series block 206; the series block 206 is connected to the power supply assembly; the power supply assembly is used for supplying power to the mandril 207 so as to control the rotation of the rotating block 208; the push rod 207 moves towards one side of the fixed die to a range that the rotating block 208 can rotate until the clamping of the formed workpiece on the convex die 202 is released; the push rod 207 moves to a range far away from one side of the fixed die 1 until the push rod can be completely retracted into the auxiliary demoulding support rod 204; through the arrangement of the rotating block 208 and the sinking groove 105 in the cavity 102 which are connected in a rotating mode, a formed workpiece can be effectively clamped out through the matching of the male die 202, the auxiliary demoulding supporting rod 204 and the rotating block 208 after the injection molding is finished, and the problem that the workpiece is sucked in the cavity 102 and needs to be taken out in a stopping mode due to the fact that a cavity is sucked possibly during the mould opening is effectively avoided.

Wherein, a demoulding rod 205 is connected on the male die 202 in a sliding way; the stripper bar 205 is used to push the formed workpiece down on the punch 202; the stripper bar 205 is connected to a tandem block 206.

Wherein, a torsion spring is connected between the rotating block 208 and the auxiliary demoulding strut 204; the torsion spring is used for controlling the rotating block 208 to be always vertical to an included angle between the auxiliary demoulding supporting rods 204 in the unpowered driving state; the end part of the mandril 207 at one side of the rotating block 208 is provided with round angle processing; the round angle processing is used for protecting the position where the rotating block 208 abuts against the top rod 207 from being scratched due to frequent rotation of a switch; the rotating block 208 can be effectively protected by arranging the ejector rod 207 with the round angle treatment, and the smoothness in the operation process is ensured; through the arrangement of the torsion spring, the rotating block 208 can effectively guarantee the clamping effect on the formed workpiece.

One specific application of this embodiment is: after the injection molding is completed, the male die 202 is withdrawn from the cavity 202; the turning block 208 and the auxiliary stripping strut 204 clamp the formed workpiece out of the cavity 202; then the demoulding rod 205 and the top rod 207 are extended out; the turning block 208 releases the grip of the formed workpiece, and the ejector rod 205 pushes down the workpiece, completing the mold stripping process.

Example II,

Referring to fig. 4-5, the present invention is a mold release assembly, which comprises a fixed mold 1 and a movable mold 2; the fixed die comprises a fixed die main body 101; the movable mold 2 includes a movable mold main body 201; a male die 202 is arranged on one surface of the movable die main body 201 opposite to the fixed die main body 101; a cavity 102 is formed in the fixed die main body 101 corresponding to the position of the convex die 202; auxiliary demoulding supporting rods 204 are symmetrically arranged on one surface of the movable mould main body 201 opposite to the fixed mould main body 101; one end of the auxiliary demoulding supporting rod 204 close to the fixed mould main body 101 is rotatably connected with a rotating block 208; the rotating block 208 is used for clamping a formed workpiece out of the fixed die main body 101 in cooperation with the auxiliary demoulding support rod 204 when the movable die main body 201 is subjected to injection molding and is subjected to demoulding.

Wherein, one end of the top rod 207 facing the fixed mold 1 is provided with a first rotating connecting part 2071; the rotating block 208 is provided with a second rotating connecting part 2081; the first rotary joint 2071 is rotatably connected with the corresponding second rotary joint 2081; by providing the first rotation connecting portion 2071 and the second rotation connecting portion 2081, the top rod 207 can effectively control the opening and closing of the rotation block 208.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A demoulding component of an injection mould comprises a fixed mould (1) and a movable mould (2); the fixed die comprises a fixed die main body (101); the movable die (2) comprises a movable die main body (201); a male die (202) is arranged on one surface of the movable die main body (201) opposite to the fixed die main body (101); a cavity (102) is formed in the fixed die main body (101) corresponding to the position of the male die (202); it is characterized in that the preparation method is characterized in that,

auxiliary demoulding supporting rods (204) are symmetrically arranged on one surface of the movable mould main body (201) opposite to the fixed mould main body (101); one end of the auxiliary demoulding support rod (204) close to the fixed mould main body (101) is rotatably connected with a rotating block (208); the rotating block (208) is used for being matched with the auxiliary demoulding support rod (204) to clamp a formed workpiece out of the fixed die main body (101) when the movable die main body (201) is subjected to injection moulding and is subjected to demoulding.

2. An injection mold stripper assembly as claimed in claim 1, wherein said auxiliary stripper struts (204) are disposed on opposite sides of the punch (202); grooves (104) are formed in the positions, corresponding to the auxiliary demolding support rods (204), of the two sides of the cavity (102); a sunk groove (105) is formed in the cavity (102) corresponding to the rotating block (208).

3. An injection mold release assembly according to claim 1, wherein each of said auxiliary release struts (204) has a through hole; a through hole is formed in the position, corresponding to the through hole of the auxiliary demoulding support rod (204) connected with the movable mould main body (201); and a top rod (207) is connected between the auxiliary demoulding supporting rods (204) in a sliding way.

4. An injection mold stripper assembly as claimed in claim 3, wherein a torsion spring is connected between said turning block (208) and said auxiliary stripper strut (204); the torsion spring is used for controlling the rotating block (208) to be always perpendicular to an included angle between the auxiliary demoulding supporting rods (204) in a non-power driving state.

5. An ejector assembly for an injection mould according to claim 3, wherein the end of the ejector pin (207) facing the stationary mould (1) is provided with a first rotary joint (2071); the rotating block (208) is provided with a second rotating connecting part (2081); the first rotary connecting part (2071) is rotatably connected with the corresponding second rotary connecting part (2081).

6. A stripper assembly for an injection mold according to claim 3, wherein a stripper rod (205) is slidably connected to the punch (202); the demoulding rod (205) is used for jacking the formed workpiece on the male die (202).

7. The stripper assembly of an injection mold according to claim 3, wherein the ejector pin (207) moves to the side of the stationary mold to a range that the rotating block (208) can rotate to release the clamping of the formed workpiece on the punch (202); the ejector rod (207) moves to a side far away from the fixed die (1) to a range where the ejector rod can be completely retracted into the auxiliary demoulding support rod (204).

8. The stripper assembly of an injection mold according to claim 4, wherein the end of the ejector pin (207) on the side of the rotary block (208) has a round-corner treatment; the round corner treatment is used for protecting the position where the rotating block (208) abuts against the push rod (207) from being scratched due to frequent rotation of a switch.

9. An injection mould stripping assembly as claimed in claim 6, wherein the ends of the ejector pins (207) remote from the fixed mould (1) are connected by a series of blocks (206); the series block (206) is connected with a power supply assembly; the power supply assembly is used for supplying power to the ejector rod (207) so as to control the rotation of the rotating block (208).

10. An injection mold stripper unit as claimed in claim 9, wherein said stripper rod (205) is connected to a power supply unit; the power supply assembly is used for providing power for the ejector rod (207) and the demoulding rod (205).