CN115625851A

CN115625851A - Quick demolding structure for household appliance plastic part mold

Info

Publication number: CN115625851A
Application number: CN202211064150.XA
Authority: CN
Inventors: 程辉; 黄少春
Original assignee: Chuzhou Bokang Mould Plastic Co ltd
Current assignee: Chuzhou Bokang Mould Plastic Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-01-20

Abstract

The invention discloses a quick demoulding structure for a plastic part mould of a household appliance, which comprises: the die comprises a base and a die body, wherein the die body comprises an upper die and a lower die, a pouring gate is arranged above the upper die and in the middle of the top surface of the upper die, and the lower die is fixedly arranged on the top surface of the base and inside the lower die and provided with an ejection mechanism and a vibration mechanism. According to the invention, the raw material in a molten state is injected into the sprue of the upper die through the injection molding machine, the raw material is molded in the molding groove, the cooling liquid is sprayed through the liquid guide block, the molding groove is cooled from the inner side, and the cooling molding speed is accelerated; drive the screw rod through the motor and rotate when taking off the material, drive three screw rod simultaneously through sprocket, action wheel and follow driving wheel to drive connecting rod and sleeve pipe respectively and remove, the sleeve pipe rebound shifts up and shifts up the push rod, with the working of plastics jack-up that makes progress, the connecting rod moves down and beats the sand grip position through shaking the head repeatedly, produces the vibration of certain degree, thereby accelerates the speed of working of plastics and shaping groove separation, improves and takes off material efficiency.

Description

Quick demolding structure for household appliance plastic part mold

Technical Field

The invention relates to the technical field of plastic mould equipment, in particular to a quick demoulding structure for a household appliance plastic part mould.

Background

The household appliances are short for household appliances, the living standard of people is continuously improved along with the continuous development of the economy of China, the household appliances configured in families are more and more complete, the demand of the household appliances is continuously increased, along with the increase of the production quantity of the household appliances, more and more plastic pieces are needed in the household appliances, and the quality requirement is higher and higher. A plastic mold is a tool which is matched with a plastic molding machine in the plastic processing industry and gives a complete configuration and accurate dimension to a plastic product. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are various, the variety and structure of plastic molds are also various.

At present, the existing plastic part of the household appliance has certain adhesion in the process of injection molding, so that the formed plastic part is adhered to a mold, and the problem of difficult material removal is caused. For this reason, a new scheme needs to be designed to give improvements.

Disclosure of Invention

The invention aims to provide a quick demolding structure for a household appliance plastic part mold, which solves the problem that the molded plastic part is adhered to the mold to cause difficult material removal due to certain adhesion in the injection molding process of the conventional household appliance plastic part, and meets the actual use requirement.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a household electrical appliances working of plastics mould is with quick demolding structure, includes: the die comprises a base and a die body, wherein the die body comprises an upper die and a lower die, the upper die is arranged above the lower die, a sprue is arranged in the middle of the top surface of the upper die, the lower die is fixedly installed on the top surface of the base, an ejection mechanism and a vibration mechanism are installed inside the lower die, a forming groove is formed in the top surface of the lower die, a convex strip is formed inside the lower die and located at the forming groove, a resonant cavity is formed in the inner side of the convex strip, and a plurality of resonant columns are uniformly installed in the resonant cavity;

the internally mounted of base has transmission chamber and sap cavity, the transmission chamber is seted up at the middle part of base and is installed drive mechanism in the transmission chamber, the sap cavity is seted up and is filled the coolant liquid in the inside both sides of base and sap cavity, and the internally mounted of sap cavity has the liquid pump, and the bottom of base still is provided with the inlet and the leakage fluid dram in sap cavity.

As a preferred embodiment of the present invention, the vibration mechanism includes a connecting rod and a fixed block, the connecting rod is U-shaped, the ends of the connecting rod are respectively connected to the fixed block, the side wall of the fixed block is provided with a movable hole, the movable hole is movably connected with a vibration head, two side walls of the raised line are respectively provided with a push block used in cooperation with the vibration head, and the middle of the bottom surface of the connecting rod is provided with a nut.

As a preferred embodiment of the present invention, one end of the vibrating head extends out of the movable hole, the other end extends into the movable hole and is connected with a positioning rod, and a spring is sleeved on the positioning rod.

As a preferred embodiment of the present invention, the transmission mechanism includes a motor, a driven wheel, a driving wheel and three vertical screws rotatably connected in the transmission cavity, the three screws are equidistantly distributed, the screws located at two sides are respectively in threaded connection with nuts in the middle of the connecting rod, the screw located in the middle is connected with the ejection mechanism, the motor is installed in the middle of the bottom surface of the base, and the power output end is connected with the lower end of one of the screws.

As a preferred embodiment of the present invention, the driving wheel is mounted on a screw connected to the motor, the driven wheel is mounted on the other two screws, and the driving wheel and the driven wheel are connected by a chain.

As a preferred embodiment of the present invention, the ejection mechanism includes a push rod, a sleeve and a liquid guide block, the push rod and the sleeve are both T-shaped structures, the ends of the push rod and the sleeve are respectively connected to the top and the bottom of the liquid guide block, the surface of the liquid guide block is provided with a water outlet hole, the end of the sleeve extends into the transmission cavity and is provided with a screw hole and is in threaded connection with the screw rod through the screw hole, and the upper end of the push rod extends out of the upper die and is placed in the forming groove.

In a preferred embodiment of the present invention, water chutes are further formed in both sides of the interior of the casing, the ends of the water chutes are connected to flexible hoses, and the ends of the flexible hoses respectively extend into the liquid cavity and are connected to the liquid pump.

As a preferred embodiment of the present invention, through holes are further formed at both sides of the interior of the lower mold, and the ends of the through holes are communicated with the liquid chamber.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, a raw material in a molten state is injected into a sprue of an upper die through an injection molding machine, the raw material is molded in a molding groove, cooling liquid is pumped into a flexible hose through a liquid pump and sprayed to the periphery through a liquid guide block, the molding groove is cooled from the inner side, and the cooling molding speed is accelerated; drive the screw rod through the motor and rotate when taking off the material, drive three screw rod simultaneously through sprocket, action wheel and follow driving wheel to drive connecting rod and sleeve pipe respectively and remove, the sleeve pipe rebound shifts up and shifts up the push rod, with the working of plastics jack-up that makes progress, the connecting rod moves down and beats the sand grip position through shaking the head repeatedly, produces the vibration of certain degree, thereby accelerates the speed of working of plastics and shaping groove separation, improves and takes off material efficiency.

Drawings

FIG. 1 is an external structural view of a rapid demolding structure for a plastic part mold for household appliances according to the present invention;

FIG. 2 is an internal structural view of the lower mold of the present invention;

FIG. 3 is an internal structural view of the bushing of the present invention;

FIG. 4 is an enlarged view of A in FIG. 2;

FIG. 5 is a structural view of the vibration mechanism of the present invention;

fig. 6 is an internal structure view of the fixing block according to the present invention.

In the figure, 1, a base; 2. a lower die; 3. an upper die; 4. a vibration mechanism; 5. a driven wheel; 6. a flexible hose; 7. a driving wheel; 8. a screw; 9. a chain; 10. a liquid pump; 11. a through hole; 12. a liquid chamber; 13. a sleeve; 14. a push rod; 15. a liquid guide block; 16. forming a groove; 17. a screw hole; 18. a water chute; 19. a resonant cavity; 20. a push block; 21. a resonant column; 22. vibrating the head; 23. a fixed block; 24. a connecting rod; 25. a nut; 26. a spring; 27. and (7) positioning the rod.

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.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a household electrical appliances working of plastics mould is with quick demolding structure, includes: the die comprises a base 1 and a die body, wherein the die body comprises an upper die 3 and a lower die 2, the upper die 3 is arranged above the lower die 2, a sprue is arranged in the middle of the top surface of the upper die 3, the lower die 2 is fixedly arranged on the top surface of the base 1, an ejection mechanism and a vibration mechanism 4 are arranged in the lower die 2, the movement directions of the vibration mechanism 4 and the ejection mechanism are opposite, namely the vibration mechanism 4 moves downwards when the ejection mechanism moves upwards, a forming groove 16 is formed in the top surface of the lower die 2, a raised line is formed in the lower die 2 and positioned at the forming groove 16, a resonant cavity 19 is formed in the inner side of the raised line, a plurality of resonant columns 21 are uniformly arranged in the resonant cavity 19, and the resonant columns 21 can be replaced by rubber materials or springs 26 to achieve a certain resonant effect;

the internally mounted of base 1 has transmission chamber and sap cavity 12, and transmission chamber sets up and installs drive mechanism at base 1's middle part and transmission intracavity, and drive mechanism is used for driving vibration mechanism 4 and ejection mechanism to remove, and the sap cavity 12 is seted up and is filled the coolant liquid in base 1's inside both sides and sap cavity 12, and the internally mounted of sap cavity 12 has liquid pump 10, and base 1's bottom still is provided with the inlet and the leakage fluid dram of sap cavity 12 for flowing back and fluid infusion.

Further improved, the vibration mechanism 4 comprises a connecting rod 24 and a fixing block 23, the connecting rod 24 is of a U-shaped structure, the end portion of the connecting rod is connected with the fixing block 23, a movable hole is formed in the side wall of the fixing block 23, a vibration head 22 is movably connected in the movable hole, push blocks 20 matched with the vibration head 22 to use are installed on the two side walls of the raised lines respectively, a nut 25 is installed in the middle of the bottom surface of the connecting rod 24, the nut 25 vertically moves due to the fact that the screw rod 8 rotates and is affected by the rotation of the screw thread and the limit of the connecting rod 24, and the connecting rod 24 is driven to move. One end of the vibration head 22 extends out of the movable hole, the other end of the vibration head extends into the movable hole and is connected with a positioning rod 27, a spring 26 is sleeved on the positioning rod 27, the spring 26 gives resilience force to the vibration head 22 to enable the vibration head to impact the outer side of the convex strip to generate certain vibration, the vibration mechanism 4 is influenced by the push block 20 in the moving process, the vibration head 22 moves towards the inside of the fixing block 23 and pops out after being separated from the push block 20, and the vibration head impacts the surface of the convex strip to generate vibration.

Further improved ground, drive mechanism includes the motor, follows driving wheel 5, action wheel 7 and three vertical and rotate the screw rod 8 of connecting in the transmission chamber, and three screw rod 8 equidistance distributes and is located the screw rod 8 of both sides and respectively with the nut 25 threaded connection in the middle part of connecting rod 24, the screw rod 8 that is located the middle part is connected with ejection mechanism, the motor is installed in the bottom surface middle part of base 1 and power take off end is connected with the lower extreme of one of screw rod 8. The driving wheel 7 is arranged on a screw rod 8 connected with the motor, the driven wheel 5 is arranged on the other two screw rods 8, the driving wheel 7 and the driven wheel 5 are connected through a chain 9, and synchronous adjustment is carried out through the chain 9. Because the diameter of the driving wheel 7 is larger than that of the driven wheel 5, the moving distance of the connecting rod 24 is 1.5-2 times of the moving distance of the sleeve 13 when the driven wheel rotates for the same number of turns.

Further improved, the ejection mechanism comprises a push rod 14, a sleeve 13 and a liquid guide block 15, the push rod 14 and the sleeve 13 are both of a T-shaped structure, the tail ends of the push rod 14 and the sleeve 13 are respectively connected with the top and the bottom of the liquid guide block 15, a water outlet hole is formed in the surface of the liquid guide block 15, the tail end of the sleeve 13 extends into the transmission cavity, is provided with a screw hole 17 and is in threaded connection with the screw rod 8 through the screw hole 17, and the upper end of the push rod 14 extends out of the upper die 3 and is arranged in the forming groove 16.

In a further improvement, water chutes 18 are further formed in two sides of the interior of the sleeve 13, the ends of the water chutes 18 are connected with the flexible hoses 6, and the ends of the flexible hoses 6 respectively extend into the liquid cavity 12 and are connected with the liquid pump 10.

Specifically, through holes 11 are further formed in two sides of the interior of the lower die 2, and the ends of the through holes 11 are communicated with the liquid cavity 12.

When the cooling device is used, a raw material in a molten state is injected into a sprue of an upper die 3 through an injection molding machine, the raw material is molded in a molding groove 16, a cooling liquid is pumped into a flexible hose 6 through a liquid pump 10 and sprayed to the periphery through a liquid guide block 15, the molding groove 16 is cooled from the inner side, and the cooling molding speed is accelerated; when the material stripping machine is used for stripping materials, the motor drives the screw rods 8 to rotate, the three screw rods 8 are simultaneously driven by the chain wheel, the driving wheel 7 and the driven wheel 5, the connecting rod 24 and the sleeve 13 are respectively driven to move, the sleeve 13 moves upwards and moves the push rod 14 upwards, a plastic part is jacked upwards, the connecting rod 24 moves downwards and repeatedly beats the convex strip part through the vibrating head 22, certain vibration is generated, the separation speed of the plastic part from the forming groove 16 is increased, and the stripping efficiency is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a household electrical appliances working of plastics mould is with quick demolding structure, includes: base (1) and mould body, its characterized in that: the die body comprises an upper die (3) and a lower die (2), the upper die (3) is arranged above the lower die (2), a pouring gate is arranged in the middle of the top surface of the upper die (3), the lower die (2) is fixedly arranged on the top surface of the base (1), an ejection mechanism and a vibration mechanism (4) are arranged in the lower die (2), a forming groove (16) is formed in the top surface of the lower die (2), a raised line is formed in the lower die (2) and located in the forming groove (16), a resonant cavity (19) is formed in the inner side of the raised line, and a plurality of resonant columns (21) are uniformly arranged in the resonant cavity (19);

the utility model discloses a cooling machine, including base (1), transmission chamber and liquid chamber (12), the internally mounted of base (1) has transmission chamber and liquid chamber (12), transmission chamber sets up and installs drive mechanism in the middle part and the transmission intracavity of base (1), the cooling liquid is filled in inside both sides and liquid chamber (12) of base (1) are seted up in liquid chamber (12), and the internally mounted of liquid chamber (12) has liquid pump (10), and the bottom of base (1) still is provided with the inlet and the leakage fluid dram of liquid chamber (12).

2. The rapid demolding structure for the plastic part mold for the household appliances as claimed in claim 1, wherein: vibration mechanism (4) include connecting rod (24) and fixed block (23), connecting rod (24) are U type structure and tip and connect fixed block (23) respectively, it has the head (22) of shaking to have seted up the downthehole swing joint of activity and activity on the lateral wall of fixed block (23), install respectively on the both sides wall of sand grip the cooperation shake ejector pad (20) that head (22) used, the bottom surface mid-mounting of connecting rod (24) has nut (25).

3. The rapid demolding structure for the plastic part mold for household appliances according to claim 2, wherein: one end of the vibration head (22) extends out of the movable hole, the other end of the vibration head extends into the movable hole and is connected with a positioning rod (27), and a spring (26) is sleeved on the positioning rod (27).

4. The rapid demolding structure for the plastic part mold for the household appliances as claimed in claim 1, wherein: drive mechanism includes the motor, follows driving wheel (5), action wheel (7) and three vertical and rotate screw rod (8) of connecting in the transmission intracavity, and three screw rod (8) equidistance distributes and is located screw rod (8) of both sides respectively with nut (25) threaded connection at connecting rod (24) middle part, and screw rod (8) that are located the middle part are connected with ejection mechanism, the motor is installed and is connected at the bottom surface middle part of base (1) and power take off end and the lower extreme of one of them screw rod (8).

5. The rapid demolding structure for the plastic part mold for household appliances as claimed in claim 4, wherein: the driving wheel (7) is arranged on a screw rod (8) connected with the motor, the driven wheel (5) is arranged on the other two screw rods (8), and the driving wheel (7) is connected with the driven wheel (5) through a chain (9).

6. The rapid demolding structure for the plastic part mold for the household appliances as claimed in claim 1, wherein: the ejection mechanism comprises a push rod (14), a sleeve (13) and a liquid guide block (15), wherein the push rod (14) and the sleeve (13) are of a T-shaped structure, the tail ends of the push rod (14) and the sleeve (13) are respectively connected with the top and the bottom of the liquid guide block (15), a water outlet hole is formed in the surface of the liquid guide block (15), the tail end of the sleeve (13) extends into the transmission cavity, is provided with a screw hole (17) and is in threaded connection with the screw rod (8) through the screw hole (17), and the upper end of the push rod (14) extends out of the upper die (3) and is arranged in a forming groove (16).

7. The rapid demolding structure for the plastic part mold for household appliances as claimed in claim 6, wherein: aqueducts (18) are further formed in two sides of the inner portion of the sleeve (13), the tail ends of the aqueducts (18) are connected with telescopic hoses (6), and the tail ends of the telescopic hoses (6) respectively extend into the liquid cavity (12) and are connected with the liquid pump (10).

8. The rapid demolding structure for the household appliance plastic part mold as claimed in claim 1, wherein: through holes (11) are further formed in two sides of the interior of the lower die (2), and the tail ends of the through holes (11) are communicated with the liquid cavity (12).