CN209903803U

CN209903803U - Sealed injection mold

Info

Publication number: CN209903803U
Application number: CN201920657932.1U
Authority: CN
Inventors: 鄢林华
Original assignee: YANGZHOU YINGTE RELAX DAILY PRODUCTS Co Ltd
Current assignee: YANGZHOU YINGTE RELAX DAILY PRODUCTS Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-07
Anticipated expiration: 2029-05-09

Abstract

The utility model discloses a sealed injection mold of injection mold technical field. The injection mold comprises a rack, an upper mold and a lower mold, wherein two ends of the upper mold are provided with first positioning assemblies, and the rack is provided with a second positioning assembly; the first positioning component comprises fixing grooves formed in two ends of the upper die, a first elastic piece for driving the first positioning column to penetrate out of the fixing grooves is arranged in each fixing groove, and the rack is provided with a first positioning hole for facilitating insertion of the first positioning column; the second positioning assembly comprises a positioning cavity arranged in the rack, the lower end of the positioning cavity is communicated with the first positioning hole, the upper end of the positioning cavity is provided with a second positioning hole communicated with the second positioning hole, a swinging piece is arranged in the positioning cavity, the lower end of the swinging piece is abutted to the first positioning column, the upper end of the swinging piece is provided with a second positioning column abutted to the second positioning column, the rack is provided with a second elastic piece for driving the second positioning column to retract into the second positioning hole, and the upper die is provided with a fixing hole for facilitating insertion of the second positioning column. The utility model has the advantages that the interlock is inseparable between the upper and lower mould.

Description

Sealed injection mold

Technical Field

The utility model relates to an injection mold technical field, in particular to sealed injection mold.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. Stirring the completely molten plastic material by a screw at a certain temperature, injecting the plastic material into a mold cavity by high pressure, and cooling and solidifying to obtain a molded product. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods.

When the existing injection mold is used for injection molding, the upper mold and the lower mold need to be closed in advance, and then molten plastic needs to be injected into a mold cavity through an injection molding machine for injection molding, however, in the closing process of the upper mold and the lower mold, the upper mold and the lower mold are not tightly occluded, the upper mold and the lower mold are easy to open in the high-pressure injection process, particularly, the two ends of the upper mold and the lower mold are not high in attaching degree and are easy to generate gaps to influence the sealing property, meanwhile, in the high-pressure injection process, the upper mold and the lower mold are easy to generate dislocation activity to directly influence the quality of an injection molding product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a inseparable sealed injection mold of interlock between upper and lower mould.

In order to realize the above utility model purpose, the utility model discloses following technical scheme that sealed injection mold adopted:

a sealed injection mold comprises a frame, an upper mold and a lower mold matched with the upper mold, wherein an upper mold cavity is formed in the inner side surface of the upper mold, a lower mold cavity is formed in the inner side surface of the lower mold, the lower surface of the upper mold is tightly attached to the upper surface of the lower mold, the upper mold cavity and the lower mold cavity are closed to form an integral mold cavity, the upper mold is provided with an injection port, the injection port is communicated with the integral mold cavity, two ends of the upper mold are provided with first positioning assemblies fixed on the frame, and the frame is provided with second positioning assemblies fixed with the upper mold; the first positioning assembly comprises fixing grooves formed in two ends of the upper die, a first positioning column capable of penetrating through the fixing grooves and a first elastic piece used for driving the first positioning column to penetrate out of the fixing grooves are arranged in the fixing grooves, and the rack is provided with a first positioning hole convenient for the first positioning column to be inserted; the second locating component comprises a locating cavity arranged in the rack, the lower end of the locating cavity is communicated with a first locating hole, the upper end of the locating cavity is provided with a second locating hole communicated with the locating cavity, a swinging piece is arranged in the locating cavity, the middle of the swinging piece is hinged to the rack, the lower end of the swinging piece is abutted to the first locating column, the upper end of the swinging piece is provided with a second locating column which is abutted to the upper end of the swinging piece and penetrates out of the second locating hole, the rack is provided with a second elastic piece which drives the second locating column to retract into the second locating hole, and the upper die is provided with a fixing hole convenient for inserting the second locating column.

Preferably, the upper surface of the lower die is provided with a plurality of annularly arranged sealing rings. Through setting up the sealing washer, improve the leakproofness between mould and the lower mould for the interlock is inseparabler between the upper and lower mould.

Preferably, the first elastic element is a compression spring arranged in the fixed groove, one end of the compression spring is fixed with the groove bottom of the fixed groove, and the other end of the compression spring abuts against the first positioning column.

Preferably, the notch of fixed slot is equipped with the stopper, the tip that first reference column inserted the fixed slot is equipped with the dog that contacts with the stopper. Through the setting of stopper and dog for first locating column can not break away from the fixed slot at the in-process of activity, and in the first locating hole of first locating column cartridge under the drive of first elastic component, at this moment, stopper and dog are inconsistent.

Preferably, the second elastic part is a tension spring arranged in the positioning cavity, one end of the tension spring is fixedly connected with the inner wall of the positioning cavity, and the other end of the tension spring is fixedly connected with the second positioning column.

Preferably, the elastic force of the first elastic member is greater than the elastic force of the second elastic member. The elasticity of the first elastic piece is larger than that of the second elastic piece, so that the first positioning column can be conveniently abutted against the swinging piece to rotate, the second positioning column is pushed by the swinging piece to be inserted into the fixing hole of the upper die, and the fixing effect between the upper die and the rack is improved.

Preferably, the lower die is fixed on the base, the upper die is provided with a lifting device for driving the upper die to lift, the lifting device comprises a lifting cylinder arranged on the frame, a cylinder barrel of the lifting cylinder is fixed on the frame, and a piston rod of the lifting cylinder is fixedly connected to the upper die. The upper die is driven by the lifting cylinder to compress the lower die until the first positioning column of the upper die is inserted into the first positioning hole of the rack and pushes the swinging piece to rotate, and the second positioning column in the rack is never driven to be inserted into the upper die, so that the operation is convenient.

Preferably, the frame is provided with a positioning rod, the upper die is provided with an upper positioning hole matched with the positioning rod in a plug-in mounting manner, and the lower die is provided with a lower positioning hole matched with the positioning rod in a plug-in mounting manner. Through setting up the locating lever, when the vertical lift of mould on the drive, improve the location between the upper and lower mould, can not produce the dislocation between the assurance upper and lower mould to improve the closure precision between the upper and lower mould.

Preferably, the swinging piece is hinged to the rack through a rotating shaft, and a handle for driving the rotating shaft to rotate is arranged on the outer side of the rotating shaft penetrating out of the rack. The swinging piece is rotated through the handle, so that the lower end of the swinging piece is abutted against the first positioning column and is drawn out from the first positioning hole and retracted into the fixing groove, the second positioning column is automatically drawn out from the fixing hole of the upper die and is retracted into the first positioning hole under the action of the tension spring, and at the moment, the upper die is separated from the rack, so that a product can be conveniently taken out by separating the upper die from the lower die.

Preferably, the outer diameter of the first positioning column is larger than the diameter of the second positioning hole. When the upper die descends, the upper die firstly passes through the second positioning hole of the rack, and at the moment, the outer diameter of the first positioning column is larger than the aperture of the second positioning hole, so that the first positioning column cannot be inserted into the second positioning hole, the upper die continuously descends to the position of the first positioning hole, and at the moment, the first positioning column is inserted into the first positioning hole under the driving of the first elastic piece.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a set up first locating component and second locating component, the first locating hole of the first locating column cartridge frame of first elastic component drive, first locating column supports and presses the swing piece, through the fixed orifices of mould on the swing piece drive second locating column cartridge, will go up the mould location in the frame, go up the mould and tightly support and press the lower mould, the phenomenon that mould plastics in-process and go up the mould production dislocation removal has directly been avoided, it is inseparable to go up the interlock between mould and the lower mould, the leakproofness between mould and the lower mould is gone up in the improvement, thereby guarantee product quality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a view showing the upper and lower molds separated from each other;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is an enlarged view of a portion B of fig. 2.

The automatic die comprises a machine frame 1, a lower die 2, a whole die cavity 3, an upper die 4, a positioning rod 5, a lifting cylinder 6, an injection molding opening 7, a fixing hole 8, a tension spring 9, a second positioning column 10, a swinging piece 11, a rotating shaft 12, a positioning cavity 13, a first positioning column 14, a limiting block 15, a stop dog 16, a fixing groove 17, a compression spring 18, an upper die cavity 19, a lower die cavity 20, a first positioning hole 21, a second positioning hole 22, a sealing ring 23 and a handle 24.

Detailed Description

The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.

As shown in fig. 1-4, a sealed injection mold comprises a frame 1, an upper mold 4 and a lower mold 2 matched with the upper mold 4, wherein the lower mold 2 is fixed on a machine base, the upper mold 4 is provided with a lifting device for driving the upper mold to lift, the lifting device comprises a lifting cylinder 6 arranged on the frame 1, a cylinder barrel of the lifting cylinder 6 is fixed on the frame 1, and a piston rod of the lifting cylinder 6 is fixedly connected to the upper mold 4; the frame 1 is provided with a positioning rod 5, the upper die 4 is provided with an upper positioning hole matched with the positioning rod 5 in an inserted manner, and the lower die 2 is provided with a lower positioning hole matched with the positioning rod 5 in an inserted manner; an upper die cavity 19 is formed in the inner side surface of the upper die 4, a lower die cavity 20 is formed in the inner side surface of the lower die 2, the lower surface of the upper die 4 is tightly attached to the upper surface of the lower die 2, a plurality of sealing rings 23 which are arranged in an annular mode are arranged on the upper surface of the lower die 2, the upper die cavity 19 and the lower die cavity 20 are closed to form an integral die cavity 3, the upper die 4 is provided with an injection port 7, the injection port 7 is communicated with the integral die cavity 3, first positioning assemblies fixed on the rack 1 are arranged at two ends of the upper die 4, and a second positioning; the first positioning component comprises fixing grooves 17 formed in two ends of the upper die 4, a first positioning column 14 capable of penetrating through the fixing grooves 17 and a first elastic piece used for driving the first positioning column 14 to penetrate out of the fixing grooves are arranged in the fixing grooves 17, a first positioning hole 21 convenient for the first positioning column 14 to be inserted is formed in the rack 1, the first elastic piece is a compression spring 18 arranged in the fixing grooves 17, one end of the compression spring 18 is fixed with the bottom of the fixing grooves 17, and the other end of the compression spring 18 abuts against the first positioning column 14; a limiting block 15 is arranged at the notch of the fixing groove 17, and a stop block 16 which is contacted with the limiting block 15 is arranged at the end part of the first positioning column 14 inserted into the fixing groove 17; the second positioning component comprises a positioning cavity 13 arranged in the frame 1, the lower end of the positioning cavity 13 is communicated with a first positioning hole 21, the upper end of the positioning cavity 13 is provided with a second positioning hole 22 communicated with the upper end of the positioning cavity 13, the outer diameter of the first positioning column 14 is larger than the aperture of the second positioning hole 22, a swinging part 11 is arranged in the positioning cavity 13, the middle part of the swinging part 11 is hinged with the frame 1, the swinging part 11 is hinged on the frame 1 through a rotating shaft 12, the rotating shaft 12 penetrates out of the outer side of the frame 1 and is provided with a handle 24 for driving the rotating shaft 12 to rotate, the lower end of the swinging part 11 is abutted against the first positioning column 14, the upper end of the swinging part 11 is provided with a second positioning column 10 abutted against the upper end of the swinging part and penetrates out of the second positioning hole 22, the frame 1 is provided with a second elastic part for driving the second positioning column 10 to retract into the second positioning hole 22, the upper die 4 is provided with, the second elastic part is a tension spring 9 arranged in the positioning cavity 13, one end of the tension spring 9 is fixedly connected with the inner wall of the positioning cavity 13, and the other end of the tension spring 9 is fixedly connected with a second positioning column 10.

The utility model discloses a concrete working process and principle: when injection molding is carried out, the upper die and the lower die need to be closed in advance, at the moment, the lifting cylinder 6 drives the upper die 4 to move downwards and press the lower die 2 fixed on the rack 1, when the upper die 4 presses the lower die 2 to a proper position, the first positioning column 14 is over against the first positioning hole 21 of the rack 1, at the moment, the elastic potential energy of the compressed compression spring 18 is released, the first positioning column 14 is pushed to be inserted into the first positioning hole 21, meanwhile, the first positioning column 14 pushes the swinging piece 11 to rotate, so that the swinging piece 11 pushes the second positioning column 10 to be inserted into the fixing hole 8 of the upper die 4, at the moment, the second positioning column 10 stretches the tension spring 9, the tension spring 9 is stretched to form elastic potential energy, at the moment, the upper die 4 presses the lower die 2, meanwhile, two ends of the upper die 4 are fixed with the rack 1, the movement of the upper die 4 in the injection molding process is avoided, the upper die, cooling and solidifying to obtain a molded product; then, the handle drives the rotating shaft 12 to rotate to drive the swinging part 11 to rotate, so that the lower end of the swinging part 11 is abutted against the first positioning column 14 to be drawn out from the first positioning hole 21 and retracted into the fixing groove 17, the second positioning column 10 is automatically drawn out from the fixing hole 8 of the upper die 4 and retracted into the second positioning hole under the action of elastic potential energy of the tension spring 9, the upper die 4 is separated from the rack 1, at the moment, the lifting cylinder 6 drives the upper die 4 to move upwards, the fixing groove 17 is dislocated with the first positioning hole 21, the handle 24 is loosened, the elastic potential energy of the tension spring 9 is released to continuously pull the second positioning column 10 to be retracted into the second positioning hole 22, and at the moment, a product is.

Claims

1. The utility model provides a sealed injection mold, includes the frame, still include the mould and with last mould matched with lower mould, the die cavity has been seted up to the medial surface of going up the mould, the die cavity down has been seted up to the medial surface of lower mould, the lower surface of going up the mould closely laminates with the upper surface of lower mould, go up the closed whole die cavity that forms in die cavity and lower die cavity, it is equipped with the mouth of moulding plastics to go up the mould, the mouth of moulding plastics communicates its characterized in that with whole die cavity: the two ends of the upper die are provided with first positioning assemblies fixed on the rack, and the rack is provided with second positioning assemblies fixed with the upper die; the first positioning assembly comprises fixing grooves formed in two ends of the upper die, a first positioning column capable of penetrating through the fixing grooves and a first elastic piece used for driving the first positioning column to penetrate out of the fixing grooves are arranged in the fixing grooves, and the rack is provided with a first positioning hole convenient for the first positioning column to be inserted; the second locating component comprises a locating cavity arranged in the rack, the lower end of the locating cavity is communicated with a first locating hole, the upper end of the locating cavity is provided with a second locating hole communicated with the locating cavity, a swinging piece is arranged in the locating cavity, the middle of the swinging piece is hinged to the rack, the lower end of the swinging piece is abutted to the first locating column, the upper end of the swinging piece is provided with a second locating column which is abutted to the upper end of the swinging piece and penetrates out of the second locating hole, the rack is provided with a second elastic piece which drives the second locating column to retract into the second locating hole, and the upper die is provided with a fixing hole convenient for inserting the second locating column.

2. The sealed injection mold of claim 1, wherein: the upper surface of the lower die is provided with a plurality of annularly arranged sealing rings.

3. The sealed injection mold of claim 1, wherein: the first elastic piece is a compression spring arranged in the fixed groove, one end of the compression spring is fixed with the groove bottom of the fixed groove, and the other end of the compression spring abuts against the first positioning column.

4. The sealed injection mold of claim 1, wherein: the notch of fixed slot is equipped with the stopper, the tip that first reference column inserted the fixed slot is equipped with the dog that contacts with the stopper.

5. The sealed injection mold of claim 1, wherein: the second elastic piece is a tension spring arranged in the positioning cavity, one end of the tension spring is fixedly connected with the inner wall of the positioning cavity, and the other end of the tension spring is fixedly connected with a second positioning column.

6. The sealed injection mold of claim 1, wherein: the elastic force of the first elastic member is greater than the elastic force of the second elastic member.

7. The sealed injection mold of claim 1, wherein: the lower die is fixed on the base, the upper die is provided with a lifting device for driving the upper die to lift, the lifting device comprises a lifting cylinder arranged on the frame, a cylinder barrel of the lifting cylinder is fixed on the frame, and a piston rod of the lifting cylinder is fixedly connected to the upper die.

8. The sealed injection mold of claim 7, wherein: the frame is equipped with the locating lever, go up the mould and be equipped with the last locating hole of cooperation locating lever cartridge, the lower mould is equipped with the lower locating hole of cooperation locating lever cartridge.

9. The sealed injection mold of claim 1, wherein: the swinging piece is hinged to the rack through a rotating shaft, and a handle for driving the rotating shaft to rotate is arranged on the outer side of the rotating shaft penetrating out of the rack.

10. The sealed injection mold of claim 1, wherein: the outer diameter of the first positioning column is larger than the aperture of the second positioning hole.