CN210791877U

CN210791877U - Semicircular cover body inward-shrinkage tripping die

Info

Publication number: CN210791877U
Application number: CN201921691210.4U
Authority: CN
Inventors: 胡凯俊; 吴德胜; 施梁; 朱彬彬; 胡正浩
Original assignee: JINHUA TECHNICIAN COLLEGE
Current assignee: JINHUA TECHNICIAN COLLEGE
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-19
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a semicircle lid retraction tripping die belongs to the mould field, including mould main part, injection molding pipe, retraction demoulding structure and T shape core, the mould main part includes movable mould and cover half, movable mould and cover half both sides are equipped with the side form, form at least two sets of injection moulding chamber in the mould main part, retraction demoulding structure has the tapering, retraction demoulding structure includes dabber and a plurality of inner slide, inner slide is connected with the dabber with the forked tail mode, retraction demoulding structure rear end is equipped with fixed slider and blocks piece, dabber axial displacement blocks to passing the slider, the inner slide is blockked the restriction axial displacement by the slider, the axle diameter that the inner slide encloses to close reduces along with the dabber is tensile backward, the runner of injection molding pipe is buried underground on the movable mould, the work piece is opened the movable mould after injection moulding chamber shaping and is cut the runner defective material. The utility model discloses multiple type work piece of injection moulding simultaneously, the shaping work piece can break away from with the defective material of runner department automatically, and the drawing of patterns is efficient.

Description

Semicircular cover body inward-shrinkage tripping die

Technical Field

The utility model relates to the field of dies, especially, relate to a semicircle lid retraction tripping die utensil.

Background

The mould is a mould and a tool for obtaining a required product by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production, the mould is a tool for manufacturing a formed article, the tool is composed of various parts, different moulds are composed of different parts, and the processing of the appearance of the article is realized mainly by changing the physical state of a formed material.

When the existing mold is used for demolding a product, the demolding efficiency is reduced, the production cost of the product is increased, and the labor amount of workers is increased due to the fact that the demolding of the conventional slide block cannot be realized due to the fact that the buckling position direction inside the product is inconsistent.

The multiple threads with the authorization notice number of CN208730284U utilize an inward-shrinkage sliding block demoulding structure, and the multiple threads utilize the inward-shrinkage sliding block demoulding structure to comprise a middle core, an inner sliding block core A, an inner sliding block core B, an inner sliding block pressing plate and an inner sliding block positioning ring; the top end of the inner slide block positioning ring is provided with a thread abdicating groove; the middle core is connected with the three inner slide block cores A and the three inner slide block cores B in a dovetail way; the inner slide block pressing plate limits axial fixation of the three inner slide block cores A and the three inner slide block cores B; the outer sides of the inner slide block core A and the inner slide block core B are connected with the upper end of the inner slide block positioning ring through threads, the inner slide block core A and the inner slide block core B are designed in a non-rotating and double-acting structure, the threads are demolded in the radial direction, the tail end of each thread cannot be pulled to deform, and the demolding structure is a mold for the threads and can only be used for injection molding of a product of one type.

And when the existing mould is used for demoulding a product, the residual material at the sprue of the injection molding pipe is connected with a formed workpiece, and an operator needs to additionally perform cutting and separating treatment, so that the processing efficiency of the workpiece is reduced, and the labor capacity of the operator is increased.

Therefore, the inner shrinkage tripping die which is capable of automatically breaking the residual materials and realizing high demoulding efficiency and simultaneously injection molding of various semicircular cover bodies is of great significance.

Disclosure of Invention

The utility model aims to solve the technical problem that a defective material automatic disconnection is provided, the efficient and interior dropout mould that contracts that can the multiple different semicircle lid of injection moulding simultaneously of drawing of patterns.

The technical scheme of the utility model is that: a semi-circle cover body inner-shrinkage tripping die is characterized by comprising a die main body, an injection molding pipe, an inner-shrinkage demoulding structure and a T-shaped core,

the mould main body comprises a movable mould and a fixed mould, side moulds are arranged on two sides of the movable mould and the fixed mould, the side moulds are inserted between the movable mould and the fixed mould, at least two groups of injection moulding cavities are formed in the mould main body,

the injection molding pipe is inserted on the movable mold and is communicated with the injection molding cavities on the two sides, the internal shrinkage demolding structure and the T-shaped core penetrate through the movable mold, the front end parts of the T-shaped core and the internal shrinkage demolding structure are respectively arranged in the corresponding different injection molding cavities, the internal shrinkage demolding structure has taper, the diameter of the front end of the internal shrinkage demolding structure is smaller than that of the rear end,

the inner shrinkage demoulding structure comprises a mandrel and a plurality of inner sliding blocks, the inner sliding blocks are arrayed in the circumferential direction of the mandrel, the inner sliding blocks are connected with the mandrel in a dovetail mode, a forming part is arranged at the front end of each inner sliding block, a fixed sliding block blocking part is arranged at the rear end of the inner shrinkage demoulding structure, the mandrel axially moves to penetrate through the sliding block blocking part, the inner sliding blocks are limited by the sliding block blocking part to axially move, the axial diameter enclosed by the inner sliding blocks is reduced along with the backward stretching of the mandrel,

the sprue of the injection molding pipe is embedded in the movable mold, and the sprue residue can be cut off by opening the movable mold after the workpiece is molded in the injection molding cavity.

The mandrel is circumferentially arrayed with a plurality of dovetail grooves and slider grooves, the dovetail grooves are formed in the bottom of the slider grooves, the dovetail grooves and the slider grooves extend from the front end to the rear end of the mandrel, the depth of the dovetail grooves is equal, and the extending direction of the dovetail grooves is a straight line and forms an included angle with the central line of the mandrel.

The inner slide block is arranged in the slide block groove, the back of the inner slide block is provided with a linear dovetail block, the dovetail block is embedded into the dovetail groove, the forming part of the inner slide block comprises a step-shaped shape and a forming hole, and the forming hole is communicated with the injection molding cavity.

The rear end of the inner slide block is connected with the slide block piece.

The slider block comprises three discs, namely an upper disc, a middle disc and a lower disc.

The rear end of the inner sliding block is provided with an outward-turning side foot which is limited in the array groove of the middle disc, and the upper disc and the lower disc limit the axial movement of the side foot.

The rear end of the mandrel is provided with a blind hole along the direction of the central line, a cooling pipe is arranged to be inserted into the blind hole, and the insertion part of the cooling pipe is a three-way pipe.

After the workpiece is subjected to injection molding, the mandrel is pulled out backwards, and the inner slide block retracts inwards along a dovetail groove track arranged on the mandrel and is separated from the workpiece.

The side mold is opened to both sides.

The fixed die is characterized in that a plurality of through holes are formed in the bottom of the fixed die and communicated with the injection molding cavity, ejector pins are arranged to be inserted into the through holes and move towards the injection molding cavity along the through holes, and the ejector pins push the molded workpiece to be separated from the fixed die.

Compared with the prior art, the utility model has the advantages that the mould main body comprises the movable mould and the fixed mould, the side moulds are arranged on two sides of the movable mould and the fixed mould, the side moulds are inserted between the movable mould and the fixed mould, at least two groups of injection molding cavities are formed in the mould main body, so that the mould can simultaneously perform injection molding on a plurality of different workpieces, the molding efficiency of the workpieces is improved, and the utilization rate of the mould is improved;

the inner-shrinkage demoulding structure and the T-shaped core penetrate through the movable mould, the front end parts of the T-shaped core and the inner-shrinkage demoulding structure are arranged in corresponding different injection moulding cavities, the inner-shrinkage demoulding structure has taper, the diameter of the front end of the inner-shrinkage demoulding structure is smaller than that of the rear end of the inner-shrinkage demoulding structure, the inner-shrinkage demoulding structure comprises a core shaft and a plurality of inner sliding blocks, the inner sliding blocks are connected with the core shaft in a dovetail mode, a fixed sliding block blocking piece is arranged at the rear end of the inner-shrinkage demoulding structure, the core shaft axially moves to penetrate through the sliding block blocking piece, the inner sliding blocks are limited by the sliding block blocking piece to axially move, the axial diameter enclosed by the inner sliding blocks is reduced along with the backward stretching of the core shaft, the core shaft is pulled;

the depth of the dovetail groove is equal, the extending direction of the dovetail groove is a straight line and forms an included angle with the central line of the mandrel, and the dovetail groove structure enables the inner sliding block to slide more smoothly;

the sprue of the injection molding pipe is embedded in the movable mold, the movable mold is opened after the workpiece is molded in the injection molding cavity, sprue residue can be cut off, the workpiece can be automatically separated from the residue at the sprue, and the workpiece processing efficiency is improved.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a sectional view of the present invention.

Fig. 2 is an overall schematic view of the present invention.

Fig. 3 is an overall schematic view of the present invention.

Fig. 4 is a partial schematic view of the present invention.

FIG. 5 is a cross-sectional view of the retraction release structure.

FIG. 6 is a schematic view of the overall structure of the inner shrink demolding structure.

Fig. 7 is a schematic view of the structure of the inner slide block.

Fig. 8 is a schematic view of the mandrel structure.

FIG. 9 is a schematic diagram of a slider stop structure.

In the figure: 1. moving the mold; 2. injection molding a cavity; 3. fixing a mold; 4. a through hole; 5. a thimble; 6. a gate; 7. an internal shrinkage demoulding structure; 8. a cooling tube; 9. injection molding a tube; 10. a T-shaped core; 11. side mould; 12. a mandrel; 13. an upper disc; 14. a middle disc; 15. a lower disc; 16. an inner slide block; 17. a side leg; 18. an array slot; 19. forming holes; 20. a dovetail block; 21. a dovetail groove; 22. a slider slot; 23. and (4) blind holes.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Fig. 1-4 show, a semicircle lid contracts dropout mould in, including mould main part, injection molding pipe 9, contract demoulding structure 7 and T shape core 10 in, the mould main part includes movable mould 1 and cover half 3, and movable mould 1 and cover half 3 both sides are equipped with side form 11, and both sides form 11 inserts between movable mould 1 and the cover half 3, and movable mould 1, cover half 3 and the side form 11 on both sides connect and form injection moulding chamber 2, form at least two sets of injection moulding chamber 2 in the mould main part, it is preferred, form two injection moulding chambers 2 in the mould main part, and injection moulding chamber 2 is a left side and right side and distributes.

The injection molding pipe 9 is inserted on the movable mold 1 and is communicated with the injection molding cavities 2 on the two sides, and the sprue 6 of the injection molding pipe 9 is embedded on the movable mold 1, so that the workpiece and the residual material in the sprue 6 can be conveniently disconnected during demolding; the internal shrinkage demoulding structure 7 and the T-shaped core 10 penetrate through the movable mould 1, the front end parts of the T-shaped core 10 and the internal shrinkage demoulding structure 7 are arranged in corresponding different injection moulding cavities 2, and the internal shrinkage demoulding structure, the mould main body and the side mould 11 are combined to form a specific injection moulding cavity 2.

As shown in fig. 5-7, the inner-shrinkage demoulding structure 7 has a taper, the front end diameter of the inner-shrinkage demoulding structure 7 is smaller than the rear end diameter, the inner-shrinkage demoulding structure 7 includes a mandrel 12 and a plurality of inner sliders 16, the inner sliders 16 are arrayed in the circumferential direction of the mandrel 12, the inner sliders 16 are connected with the mandrel 12 in a dovetail manner, the front end of each inner slider 16 is provided with a forming part, the rear end of the inner-shrinkage demoulding structure 7 is provided with a fixed slider stopper, the mandrel 12 axially moves to penetrate through the slider stopper, the inner sliders 16 are limited by the slider stopper to axially move, the axial diameter enclosed by the inner sliders 16 is reduced along with the backward stretching of the mandrel 12, and the demoulding efficiency of the die is higher.

As shown in fig. 8, the spindle 12 is circumferentially arrayed with a plurality of dovetail grooves 21 and slider grooves 22, the dovetail grooves 21 are arranged on the bottom surfaces of the slider grooves 22, the dovetail grooves 21 and the slider grooves 22 extend from the front end to the rear end of the spindle 12, the depths of the grooves of the dovetail grooves 21 are equal, the extending directions of the dovetail grooves 21 are straight lines and form an included angle with the central line of the spindle 12, the inner slider 16 is arranged in the slider grooves 22, linear dovetail blocks 20 are arranged on the back of the inner slider 16, the dovetail blocks 20 are embedded in the dovetail grooves 21, the forming part of the inner slider 16 comprises step-shaped shapes and forming holes 19, the forming holes 19 are communicated with the injection molding cavity 2, and the dovetail grooves 21 are structurally arranged.

The rear end of the inner slide block 16 is connected with a slide block stopper which comprises an upper disc, a middle disc and a lower disc, the rear end of the inner slide block 16 is provided with an outward turning side foot 17, the outward turning side foot 17 is limited in an array groove 18 of the middle disc 14, and the upper disc 13 and the lower disc 15 limit the axial movement of the side foot 17.

As shown in fig. 5, a blind hole 23 is formed in the rear end of the mandrel 12 along the direction of the central line, the blind hole 23 extends to the front end of the mandrel 12 and is located in the injection molding cavity 2, a cooling pipe 8 is arranged to be inserted into the blind hole 23, the insertion part of the cooling pipe 8 is a three-way pipe, one end of the three-way pipe is connected with a water inlet pipe, one end of the three-way pipe is inserted into the blind hole 23, one end of the three-way pipe is connected with a water outlet pipe, water fed by the water inlet pipe enters the blind hole 23, the water is continuously impacted by the water at.

As shown in fig. 3, a plurality of through holes 4 are formed in the bottom of the fixed mold 3, the through holes 4 are communicated with the injection molding cavity 2, ejector pins 5 are arranged to be inserted into the through holes 4, the ejector pins 5 move towards the injection molding cavity 2 along the through holes 4, and the ejector pins 5 push a molded workpiece to be separated from the fixed mold 3.

After injection molding of a workpiece in the mold, the core shaft 12 is pulled out backwards, the inner slide block 16 is retracted inwards along a track of a dovetail groove 21 formed in the core shaft 12 to be separated from the workpiece, the T-shaped core 10 is taken out, the movable mold 1 is opened upwards, the movable mold 1 can cut off the residue at the sprue 6 in the upward movement process, the side mold 11 is opened towards two sides, then the ejector pin 5 arranged at the bottom of the fixed mold 3 moves towards the injection molding cavity 2 along the through hole 4, the ejector pin 5 pushes the molded workpiece to be separated from the fixed mold 3, and the injection molded workpiece is taken out.

It is right above the utility model provides a semicircle lid retraction tripping die has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment is only used for helping to understand the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A semi-circle cover body inner-shrinkage tripping die is characterized by comprising a die main body, an injection molding pipe, an inner-shrinkage demoulding structure and a T-shaped core,

2. The mold for inward retracting and releasing of the semicircular cover body as claimed in claim 1, wherein the mandrel is circumferentially arrayed with a plurality of dovetail grooves and slider grooves, the dovetail grooves are formed in the bottom surface of the slider groove, the dovetail grooves and the slider grooves extend from the front end to the rear end of the mandrel, the depths of the dovetail grooves are equal, and the extending directions of the dovetail grooves are straight lines and form an included angle with the central line of the mandrel.

3. The half-round cover retraction release die as claimed in claim 2, wherein the inner slide block is disposed in the slide block slot, the back of the inner slide block is provided with a linear dovetail block, the dovetail block is embedded in the dovetail slot, the forming portion of the inner slide block comprises a step-like shape and a forming hole, and the forming hole is communicated with the injection molding cavity.

4. The mold for releasing the semicircular cover from the inside of the cover according to claim 1, wherein the rear end of the inner slide is connected to a slide stopper.

5. The half-round cover retraction release die according to claim 1 or 4, wherein the slider block comprises three discs, upper, middle and lower.

6. The mold for releasing the inward retraction of a semicircular cover as claimed in claim 5, wherein the inner slide block is provided at a rear end thereof with an outward turned side leg, the outward turned side leg is confined in the array groove of the middle disc, and the upper disc and the lower disc restrict the side leg from moving axially.

7. The inward-shrinkage releasing die for the semicircular cover body according to claim 1 or 2, wherein a blind hole is formed in the rear end of the mandrel along the direction of the center line, a cooling pipe is inserted into the blind hole, and the insertion part of the cooling pipe is a three-way pipe.

8. The inward-retracting releasing die of the semicircular cover body as claimed in claim 2, wherein the mandrel is pulled out backwards after the workpiece is injection molded, and the inner sliding block retracts inwards along a dovetail groove track arranged on the mandrel to separate from the workpiece.

9. The mold for releasing a semicircular cover from a female snap ring according to claim 1, wherein the side molds are opened to both sides.

10. The mold for inward retracting and releasing of the semicircular cover body as claimed in claim 1, wherein a plurality of through holes are formed in the bottom of the fixed mold, the through holes are communicated with the injection molding cavity, ejector pins are inserted into the through holes, the ejector pins move towards the injection molding cavity along the through holes, and the ejector pins push a molded workpiece to be separated from the fixed mold.