CN113665061B

CN113665061B - Injection molding mold

Info

Publication number: CN113665061B
Application number: CN202110835990.0A
Authority: CN
Inventors: 白青霞; 岑欢
Original assignee: Foshan Shunde Timmas Electronic Co ltd
Current assignee: Foshan Shunde Timmas Electronic Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2023-09-26
Anticipated expiration: 2041-07-23
Also published as: CN113665061A

Abstract

The invention relates to the field of dies, in particular to a die for injection molding, which comprises an upper die and a lower die, wherein the upper die is arranged above the lower die, a sealing mechanism is arranged above the lower die and comprises a plugging plate and a sealing gasket, the plugging plate is slidably arranged on the periphery of the upper part of the lower die, one side of the plugging plate, which faces the lower die, is connected with the sealing gasket, the two ends of the side face of the upper part of the lower die are horizontally connected with a transverse plate, the plugging plate is slidably arranged above the transverse plate, a sliding groove is arranged in the transverse plate along the sliding direction of the plugging plate, dust is not easy to enter between the upper die and the lower die due to the sealing gasket when the die is not used, the cleaning of the die is not needed when the die is used again, and when the plugging plate moves to the joint between the upper die and the lower die, the end part of the plugging plate is blocked through an elastic plate, so that the plugging effect between the upper die and the lower die is more full and comprehensive.

Description

Injection molding mold

Technical Field

The invention relates to the field of molds, in particular to a mold for injection molding.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.

The injection mold is often divided into an upper mold and a lower mold, and the raw materials are molded after the upper mold and the lower mold are clamped. Because there is the gap in junction after last mould and lower mould block, gap and die cavity intercommunication for outside dust impurity easily enters into the inside of die cavity, and the inside remaining impurity of die cavity can cause the influence to the product of making subsequently, makes the quality of product reduce to some extent. The dust outside the mould can also enter the inside of die cavity in the placing process, and the mould needs to be cleaned when the mould is used again subsequently, so that the working efficiency is affected. And the raw materials in the die cavity are excessive and then easily leak from the joint, so that the raw materials are scattered on the working surface, and the raw materials need to be cleaned later, thereby causing inconvenience to normal work.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a mold for injection molding.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a mould for injection moulding, includes mould and lower mould, goes up the top at the lower mould is installed to the mould, the top of lower mould is provided with sealing mechanism, and sealing mechanism includes shutoff board and sealing pad.

The top of lower mould all around slidable mounting has the shutoff board, and one side of shutoff board towards the lower mould is connected with sealed pad, the equal horizontal connection in top side both ends of lower mould has the diaphragm, shutoff board slidable mounting in the top of diaphragm, and the inside of diaphragm is provided with the spout along the slip direction of shutoff board, and the one end fixedly connected with tip board of lower mould is kept away from to the inside of spout, and the inside slidable mounting of spout has the connecting plate, is connected with the extension spring between one end and the tip board of connecting plate, the other end and the shutoff board fixed connection of top thereof.

The top of lower mould all is vertical in the top of every diaphragm, and the inside slidable mounting of jack has the roof, is connected with a plurality of return spring between the bottom of roof and the inside bottom of jack, and the bottom of roof is connected with the stay cord, and the inside of spout is close to the one end of lower mould and the lateral wall of lower mould all is provided with the through-hole in the diaphragm below, and the one end of stay cord passes from the through-hole with connecting plate fixed connection, go up the bottom of mould all around both ends all vertical be connected with the inserted bar of jack looks adaptation.

Preferably, the inside of sealed pad is provided with a plurality of gas vent, and the internally mounted of gas vent has the check valve, and the air inlet has all been seted up at the top both ends of shutoff board, and the internally mounted of air inlet has the fan, and the inside of shutoff board is provided with gas passage along length direction, and air inlet and gas vent all link up with gas passage and be connected.

Preferably, a movable groove is formed in the inner wall of one side of the sliding groove, a start-stop switch for controlling the fan is mounted in the movable groove, a poking rod used for poking is made of rubber on the side face of the start-stop switch, and the poking rod can be in contact with the connecting plate.

Preferably, both ends of the plugging plate are connected with arc-shaped elastic plates, and one end of the elastic plate, which is far away from the plugging plate, is connected with a magnet plate.

Preferably, a detachable support plate is arranged between the side surfaces of the upper die and the lower die, the support plate is in an arc shape, the side surfaces of the upper end and the lower end of the support plate face one side of the upper die, a positioning rod is connected to one side of the upper die, and two fixing holes for inserting the positioning rod are formed in the upper side of the side surface of the upper die and the lower side of the side surface of the lower die.

Preferably, an air bag is arranged on one side, away from the upper die, of the supporting plate, and a heat insulation layer is connected on one side, away from the air bag, of the supporting plate.

The invention has the beneficial effects that:

1. through setting up the shutoff board for after last mould and the lower mould block, the inserted bar inserts the inside of jack, and the stay cord pulls the connecting plate, drives the shutoff board and upwards moves the junction between mould and the lower mould, seals the junction between mould and the lower mould up to the sealed pad of side. The method has the advantages that the leakage of excessive internal raw materials from the joint between the upper die and the lower die can be avoided, the energy consumption is reduced, the step of cleaning after the leakage is omitted, and the efficiency in work is improved. And the sealing gasket can prevent external impurities from entering the inside of the die cavity from the joint between the upper die and the lower die, so that the manufactured product is cleaner and is not easy to be influenced by external environment. When the die is not used, the sealing gasket can prevent dust from entering between the upper die and the lower die, cleaning is not needed when the die is used again, and the step of cleaning the die is omitted. When the plugging plate moves to the joint between the upper die and the lower die, the end part is plugged through the elastic plate, so that the plugging between the upper die and the lower die is more complete, and the plugging effect is better.

2. Through installing the fan on the closing plate for when the connecting plate received the pulling of stay cord, the connecting plate promoted the start-stop switch to the in-process that the upward mould removed, made the fan stop operation of shutoff board top. When the upper die and the lower die are separated, the connecting plate can push the start-stop switch in the moving process of the end plate, so that the fan starts to operate, the fan sucks outside air into the plugging plate and finally discharges the air outwards from the air outlet, and the discharged gas blows the die cavity, so that residual raw materials generated in the processing process can be blown and separated, the product is favorably fallen off, the product is conveniently taken out, and the working efficiency in the processing process is improved. The running time of the fan is related to the positions of the upper die and the lower die, so that the fan can work in a time period, and the consumption of electric power can be reduced as much as possible.

3. The detachable support plate is arranged outside the die, so that the support plate can be arranged around the die in the process of placing the die or when the die is not used in a hydraulic press. After the outside object collides the mould, the mould is not fragile, and the mould falls behind taking place in depositing the in-process, backup pad and gasbag can make the mould can reduce the striking to external object or staff, improves the security in the mould is deposited. Simultaneously, the mutual separation of the upper die and the lower die can be avoided, and the die core inside the die after falling is not easy to damage. When the mould temporarily stops in the hydraulic press, the supporting plate and the air bag can prevent workers from touching the mould to be scalded, and the accidental occurrence of scalding can be prevented.

Drawings

The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

Fig. 1 is a schematic diagram of an overall structure provided by the present invention.

Fig. 2 is a schematic diagram of a mounting structure of a cross plate and a lower die according to the present invention.

Fig. 3 is a schematic diagram of a plugging plate structure provided by the invention.

Fig. 4 is a schematic diagram of a split structure of an upper die and a lower die provided by the invention.

Fig. 5 is a schematic diagram of the internal structure of the charging hole provided by the invention.

Fig. 6 is a schematic view of a cross plate structure according to the present invention.

Fig. 7 is an enlarged schematic view of the detail a in fig. 1 according to the present invention.

Fig. 8 is a schematic view of a support plate mounting structure according to the present invention.

Fig. 9 is a schematic diagram of the connection of the drawstring and the connection plate.

In the figure: 1. an upper die; 2. a lower die; 3. a plugging plate; 4. a cross plate; 5. a fixing hole; 6. a sealing gasket; 7. an air inlet; 8. an exhaust port; 9. a jack; 10. a rod; 11. a top plate; 12. a pull rope; 13. a return spring; 14. a chute; 15. an end plate; 16. a start-stop switch; 17. a moving groove; 18. a connecting plate; 19. a tension spring; 20. a magnet plate; 21. an elastic plate; 22. an air bag; 23. a support plate; 24. a positioning rod; 25. and a through hole.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, a mold for injection molding comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 is installed above the lower mold 2, and a sealing mechanism is arranged above the lower mold 2 and comprises a plugging plate 3 and a sealing gasket 6.

The top of lower mould 2 all around slidable mounting has shutoff board 3, one side of shutoff board 3 orientation lower mould 2 is connected with sealed 6, the equal horizontal connection in top side both ends of lower mould 2 has diaphragm 4, shutoff board 3 slidable mounting is in the top of diaphragm 4, the inside of diaphragm 4 is provided with spout 14 along the slip direction of shutoff board 3, the one end fixedly connected with tip board 15 of lower mould 2 is kept away from to the inside of spout 14, the inside slidable mounting of spout 14 has connecting plate 18, be connected with extension spring 19 between one end and the tip board 15 of connecting plate 18, the other end and the shutoff board 3 fixed connection of top thereof.

The top of lower mould 2 all is vertical in the top of every diaphragm 4 to be provided with jack 9, the inside slidable mounting of jack 9 has roof 11, be connected with a plurality of return spring 13 between the bottom of roof 11 and the inside bottom of jack 9, the bottom of roof 11 is connected with stay cord 12, the inside of spout 14 is close to the one end of lower mould 2 and the lateral wall of lower mould 2 all is provided with through-hole 25 in diaphragm 4 below, pass from through-hole 25 with connecting plate 18 fixed connection, go up the bottom of mould 1 all around both ends all vertical be connected with jack 9 looks adaptation's inserted bar 10.

As a technical optimization scheme of the invention, a plurality of exhaust ports 8 are arranged in the sealing gasket 6, one-way valves are arranged in the exhaust ports 8, air inlets 7 are formed in two ends of the top of the plugging plate 3, fans are arranged in the air inlets 7, air channels are arranged in the plugging plate 3 along the length direction, the air inlets 7 and the exhaust ports 8 are all in through connection with the air channels, the fans suck external air into the plugging plate 3 and finally exhaust the air outwards from the exhaust ports 8, the exhausted air blows the die cavity, residual raw materials generated in the processing process can be blown and separated, the product is easy to fall off, the product is convenient to take out, and the working efficiency in the processing process is improved.

As a technical optimization scheme of the invention, a movable groove 17 is arranged on the inner wall of one side of the chute 14, a start-stop switch 16 for controlling a fan is arranged in the movable groove 17, a poking rod used for poking the side surface of the start-stop switch 16 is made of rubber, the poking rod can be in contact with a connecting plate 18, the start-stop switch 16 is pushed by the connecting plate 18 in the moving process of the upper die 1, the fan above the plugging plate 3 stops running, and the start-stop switch 16 can be pushed by the connecting plate 18 in the moving process of the connecting plate 18 to the end plate 15, so that the fan starts running.

As a technical optimization scheme of the invention, both ends of the plugging plate 3 are connected with arc-shaped elastic plates 21, one end, far away from the plugging plate 3, of each elastic plate 21 is connected with a magnet plate 20, when the plugging plate 3 moves to the joint between the upper die 1 and the lower die 2, the magnet plates 20 at the end parts of the adjacent plugging plates 3 are mutually adhered, and the end parts are plugged through the elastic plates 21, so that the plugging between the upper die 1 and the lower die 2 is more complete.

As a technical optimization scheme of the invention, a detachable supporting plate 23 is arranged between the side surfaces of the upper die 1 and the lower die 2, the supporting plate 23 is in an arc shape, one side, facing the upper die 1, of the side surfaces of the upper end and the lower end of the supporting plate 23 is connected with a positioning rod 24, two fixing holes 5 for inserting the positioning rod 24 are arranged above the side surface of the upper die 1 and below the side surface of the lower die 2, the supporting plate 23 and the air bag 22 can enable the die to reduce impact on external objects or staff, and the safety in die storage is improved.

As a technical optimization scheme of the invention, an air bag 22 is arranged on one side of the supporting plate 23 far away from the upper die 1, and a heat insulation layer is connected on one side of the supporting plate 23 far away from the air bag 22, and can protect the air bag 22 from being damaged easily by heat.

When the invention is used, the upper die 1 and the lower die 2 are respectively arranged on the hydraulic press, the oil cylinder of the hydraulic press can drive the upper die 1 to move in the vertical direction when in operation, after raw materials are injected into the die cavity of the lower die 2, the upper die 1 and the lower die 2 are mutually clamped, the raw materials are manufactured into products, after the upper die 1 and the lower die 2 are clamped, the inserted rod 10 is inserted into the jack 9, the inserted rod 10 presses the top plate 11 downwards, the return spring 13 is compressed, the stabilizer rod is transversely arranged in the through hole 25, when the pull rope 12 is pulled downwards by the top plate 11, the pull rope 12 slides on the stabilizer rod, the connecting plate 18 is pulled by the pull rope 12, the connecting plate 18 slides in the chute 14, and the connecting plate 18 drives the sealing plate 3 to move because the inner side of the connecting plate 18 is abutted with the sealing plate 3, and then the sealing pad 6 at the side face seals the connecting position between the upper die 1 and the lower die 2. The method can avoid excessive internal raw materials from leaking from the joint between the upper die 1 and the lower die 2, omits the step of cleaning leaked materials, and improves the efficiency in work. And the sealing gasket 6 can avoid external impurities to enter the inside of the die cavity from the joint between the upper die 1 and the lower die 2, so that the manufactured product is cleaner and is not easy to be influenced by external environment. When the die is not used, the sealing gasket 6 can prevent dust from entering between the upper die 1 and the lower die 2, cleaning is not needed when the die is used again, and the step of cleaning the die is omitted.

When the plugging plate 3 moves to the joint between the upper die 1 and the lower die 2, the magnet plates 20 at the end parts of the adjacent plugging plates 3 are mutually bonded, and the end parts are plugged through the elastic plates 21, so that the plugging effect between the upper die 1 and the lower die 2 is better.

When the connecting plate 18 is pulled by the pull rope 12, the connecting plate 18 pushes the start-stop switch 16 in the moving process of the upper die 1, so that the fan above the plugging plate 3 stops running. When the upper die 1 and the lower die 2 are separated, the inserting rod 10 is pulled out of the inserting hole 9, the top plate 11 is pushed to move upwards by the return spring 13, the pull rope 12 moves upwards, the connecting plate 18 can be pulled to move towards the end plate 15 by the tension spring 19, the start-stop switch 16 can be pushed in the moving process of the connecting plate 18 towards the end plate 15, so that the fan starts to operate, the fan sucks outside air into the plugging plate 3 and finally discharges the air from the air outlet 8 outwards, the discharged air blows the die cavity, residual raw materials generated in the processing process can be blown and separated, the product is conveniently removed, and the working efficiency in the processing process is improved. The running time of the fan is related to the positions of the upper die 1 and the lower die 2, so that the fan can work in a time period, and the consumption of electric power can be reduced as much as possible.

The support plate 23 may be installed around the mold during the placement of the mold or when not in use in a hydraulic press. The positioning rod 24 at the end part of the supporting plate 23 is inserted into the fixing hole 5, and air is filled into the air bag 22, so that the air bag 22 can play a role in buffering. After the external object collides with the mould, the mould is not easy to damage, and after the mould falls down in the storage process, the supporting plate 23 and the air bag 22 can enable the mould to reduce the impact on the external object or staff, so that the safety in the storage of the mould is improved. Simultaneously, the mutual separation of the upper die 1 and the lower die 2 can be avoided, and the die core inside the die after falling is not easy to damage. When the mold is temporarily stopped in the hydraulic press, the supporting plate 23 and the air bag 22 can prevent workers from touching the mold and being scalded, and can prevent the accidental occurrence of scalding.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form 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 understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The injection molding die comprises an upper die (1) and a lower die (2), wherein the upper die (1) is arranged above the lower die (2), and is characterized in that a sealing mechanism is arranged above the lower die (2) and comprises a plugging plate (3) and a sealing gasket (6);

the upper side of the lower die (2) is provided with a plugging plate (3) in a sliding mode all around, one side, facing the lower die (2), of the plugging plate (3) is connected with a sealing gasket (6), two ends of the side face of the upper side of the lower die (2) are horizontally connected with a transverse plate (4), the plugging plate (3) is arranged above the transverse plate (4) in a sliding mode, a sliding groove (14) is formed in the transverse plate (4) along the sliding direction of the plugging plate (3), one end, far away from the lower die (2), of the sliding groove (14) is fixedly connected with an end plate (15), a connecting plate (18) is arranged in the sliding groove (14) in a sliding mode, a tension spring (19) is connected between one end of the connecting plate (18) and the end plate (15), and the other end of the connecting plate is fixedly connected with the plugging plate (3) above the connecting plate;

the top of the lower die (2) is vertically provided with a jack (9) above each transverse plate (4), a top plate (11) is slidably arranged in each jack (9), a plurality of return springs (13) are connected between the bottom of the top plate (11) and the inner bottom end of each jack (9), the bottom of the top plate (11) is connected with a pull rope (12), one end, close to the lower die (2), of the inner part of each sliding chute (14) and the side wall of the lower die (2) are respectively provided with a through hole (25) below each transverse plate (4), one end of each pull rope (12) penetrates through the corresponding through hole (25) to be fixedly connected with a connecting plate (18), and inserted bars (10) matched with the jacks (9) are vertically connected at two ends around the bottom of the upper die (1);

the inside of sealed pad (6) is provided with a plurality of gas vent (8), and the internally mounted of gas vent (8) has the check valve, and air inlet (7) have all been seted up at the top both ends of shutoff board (3), and the internally mounted of air inlet (7) has the fan, and the inside of shutoff board (3) is provided with gas passage along length direction, and air inlet (7) and gas vent (8) all link up with gas passage and are connected.

2. The injection molding die according to claim 1, wherein a movable groove (17) is formed in an inner wall of one side of the sliding groove (14), a start-stop switch (16) for controlling a fan is installed in the movable groove (17), and a toggle rod used for toggling is made of rubber and can be contacted with the connecting plate (18) on the side face of the start-stop switch (16).

3. The injection molding die according to claim 1, wherein both ends of the plugging plate (3) are connected with arc-shaped elastic plates (21), and one end of the elastic plates (21) away from the plugging plate (3) is connected with a magnet plate (20).

4. The injection molding die according to claim 1, wherein a detachable supporting plate (23) is installed between the side surfaces of the upper die (1) and the lower die (2), the supporting plate (23) is in an arc shape, one side of the side surfaces of the upper end and the lower end of the supporting plate (23) facing the upper die (1) is connected with a positioning rod (24), and two fixing holes (5) for inserting the positioning rod (24) are formed above the side surface of the upper die (1) and below the side surface of the lower die (2).

5. The injection molding die according to claim 4, wherein an air bag (22) is mounted on a side of the support plate (23) away from the upper die (1), and a heat insulating layer is connected to a side of the support plate (23) away from the air bag (22).