CN219114658U

CN219114658U - Integrated demolding ejection injection mold for circular arc hollow injection molding part

Info

Publication number: CN219114658U
Application number: CN202223432559.0U
Authority: CN
Inventors: 崔世民
Original assignee: Qingdao Fengshunhe New Energy Co ltd
Current assignee: Qingdao Fengshunhe New Energy Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-02
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an integral demolding ejection injection mold for circular arc hollow injection molding pieces, which comprises a base, a lower mold base, guide rods, a top seat, an upper mold base, a hydraulic cylinder A, a cylinder, an ejection structure, a first water cooling structure and a second water cooling structure, wherein the lower mold base is fixedly arranged on the upper end surface of the base through a plurality of supporting legs, the upper surface of the lower mold base is provided with four circular injection molding cavities, the four guide rods are fixedly arranged on the upper surface of the lower mold base, the bottoms of the top seat are fixedly connected with the top ends of the four guide rods, the upper mold base is movably sleeved on the outer parts of the four guide rods, and the upper mold base is provided with injection molding channels. The utility model can perform water-cooling heat exchange cooling treatment on the outer ring and the inner ring of the circular arc hollow injection molding piece, and assist in generating a fine gap between the injection molding piece and the mold, thereby facilitating the ejection of the circular arc hollow injection molding piece by matching with the ejection structure to finish the demolding work, being difficult to damage to workpieces and having higher practicability.

Description

Integrated demolding ejection injection mold for circular arc hollow injection molding part

Technical Field

The utility model relates to the technical field of injection molds, in particular to an integral demolding and ejection injection mold for circular arc-shaped hollow injection molding parts.

Background

The injection molding method has the advantages of high production speed, high efficiency, automation of operation, multiple colors, various shapes, large size, accurate product size, easy updating of products, and capability of forming products with complex shapes, and is suitable for the field of mass production, products with complex shapes and other molding processing.

The traditional device is provided with a through hole at the bottom and a movable push-pull rod, so that a solidified model can be ejected during use, but if the preparation for demolding is not finished, the joint of the model and the mould is easily caused to be too large, so that the model is damaged, and therefore, the improved injection molding integrated ejection injection mold is now provided, as follows.

Through retrieving, the patent of the publication number CN217196677U of authorizing discloses an integrative drawing of patterns ejecting injection mold of convex hollow injection molding, which comprises a workbench, fixedly connected with mould frame on the workstation up end central point put, the perforation has been seted up on the workstation, the perforation is located mould frame below, the workstation below is provided with two first cylinders, two the piston end fixedly connected with push pedal of first cylinder, push pedal up end array is provided with a plurality of ejector pins, a plurality of the top of ejector pin is all vertically upwards passed perforation and mould frame in proper order, the mould frame outside is around being equipped with the cold water pipe, the mould frame outside is provided with a plurality of heat dissipation sticks. According to the utility model, the cold water pipe is quickly in heat exchange with the mold frame, and according to the principle of thermal expansion and cold contraction of an object, a fine gap can appear on the contact surface of the mold frame and the plastic part, so that the viscosity of the contact surface of the plastic part and the mold can be reduced, the friction force between the plastic part and the mold frame can be reduced, and the production quality of the plastic part can be improved.

Through retrieving, the patent of the publication number CN216708174U of authorizing discloses an integrative drawing of patterns ejecting injection mold of convex hollow injection molding, which comprises a base, four evenly distributed's of top fixedly connected with bracing piece of base, the middle part fixedly connected with drive structure of base, the top fixedly connected with lower mould of bracing piece, the top outside fixedly connected with four slide bars of vertical setting of lower mould, the upper end fixedly connected with roof of slide bar, the top of lower mould is provided with the mould. Through lifting up the mould, shrink montant afterwards for montant breaks away from with moulding, simultaneously, ejection structure can stretch spring under the promotion of atmospheric pressure owing to no longer receive the barrier of montant, and gas can pass the ventilation groove and enter into the inside of hollow groove to stretch into the hollow inslot, thereby blow the outside of circular arc groove with moulding the directness steadily, it is very convenient to the arrangement of moulding this moment, and the air of blowing out can also cool down lower mould and last mould.

However, the two above patents have the following drawbacks:

the patent with the authority of CN217196677U only considers the cooling treatment of the outer ring of the workpiece, and the workpiece is circular arc-shaped, so that the inner ring of the workpiece is adhered to the die greatly, nondestructive ejection demolding treatment is not easy to perform, and the patent with the authority of CN216708174U is in demolding operation, because the workpiece is circular arc-shaped, the middle is hollow, when in blowing, gas can be blown out through the hollow position of the workpiece, pressure difference cannot be generated to blow the workpiece out of the circular arc groove, and the practicability is poor.

Disclosure of Invention

The utility model aims to provide an integral demolding ejection injection mold for an arc-shaped hollow injection molding part, so as to solve the problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an integrative drawing of patterns ejecting injection mold of convex hollow injection molding, includes base, die holder, guide arm, footstock, upper die base, pneumatic cylinder A, cylinder, ejection structure, first water cooling structure and second water cooling structure, the die holder is through a plurality of supporting legs fixed mounting in the upper end surface department of base, circular shape injection molding die cavity has been seted up to the upper surface department of die holder, the guide arm is provided with four, four the equal fixed mounting of guide arm is in the upper surface department of die holder, the bottom of footstock and the top department fixed connection of four guide arms, the outside department of four guide arms is in to the die holder movable sleeve, the upper die base department is equipped with the injection molding passageway, pneumatic cylinder A is run through fixed mounting in footstock department, the bottom telescopic end of pneumatic cylinder A and the top department fixed connection of upper die base, cylinder fixed mounting in the bottom department of upper die base, the water cooling chamber has been seted up to the inside of cylinder, ejection structure is installed in the upper end surface department of base, just ejection structure runs through the die holder to its inside injection molding die cavity, first water cooling structure is in the installation in the upper die holder and the second water cooling structure.

Preferably, the ejecting structure includes pneumatic cylinder B, lifter plate, ejector pin and annular roof, pneumatic cylinder B fixed mounting is in the upper end surface department of base, the bottom of lifter plate and the flexible end department of top of pneumatic cylinder B fixed connection, the ejector pin is provided with four, four the ejector pin is annular array type fixed mounting in the top department of lifter plate, and four in the equal movable penetration extension of ejector pin is in the inside of die holder, the bottom of roof and the top department fixed connection of four ejector pins, just the roof is located the inside bottom department of injection molding die cavity, the upper surface of roof and the bottom surface parallel and level of injection molding die cavity.

Preferably, a plurality of telescopic rods are arranged on the upper end surface of the base, and the tops of the telescopic rods are fixedly connected with the bottom of the lifting plate.

Preferably, the first water cooling structure comprises an annular water cooling groove, a water inlet hard pipe A and a water outlet hard pipe A, the water cooling groove is formed in the inner portion of the lower die holder, the water cooling groove is located at the outer portion of the injection molding die cavity in a surrounding mode, the water inlet hard pipe A and the water outlet hard pipe A are respectively arranged at two sides of the lower die holder in a penetrating mode and fixedly installed mode, the water inlet hard pipe A and the water outlet hard pipe A are respectively communicated and connected with two outer sides of the water cooling groove, and the water inlet hard pipe A and the water outlet hard pipe A are externally connected with a circulating water cooling mechanism.

Preferably, the second water cooling structure includes hard tube B, play water hard tube B, water inlet hose and play water hose, hard tube B and play water hard tube B are respectively and run through the both sides department of installing in the upper die base, just hard tube B and play water hard tube B all run through the cylinder and be connected rather than inside water cooling chamber intercommunication, water inlet hose and play water hose are respectively with hard tube B and play water hard tube B keep away from in the one end department intercommunication connection of cylinder, just water inlet hose and play water hose all external circulation water cooling mechanism.

The utility model provides an integral demolding ejection injection mold for an arc-shaped hollow injection molding part, which has the following beneficial effects:

according to the utility model, the base, the lower die holder, the guide rod, the top seat, the upper die holder, the hydraulic cylinder A, the cylinder, the ejection structure, the first water cooling structure and the second water cooling structure are arranged, so that the hydraulic cylinder A can be started to drive the upper die holder to be matched with the lower die holder in die assembly when in operation, the bottom of the cylinder is in contact with the injection molding cavity and forms an annular cavity with the injection molding cavity, then the injection molding operation of a workpiece can be carried out through the injection molding channel, after the injection molding operation is completed, the outer ring part of the workpiece can be cooled through the first water cooling structure matched with the lower die holder, the inner ring part of the workpiece is cooled through the second water cooling structure matched with the upper die holder and the cylinder, and therefore, the outer ring and the inner ring of the workpiece are influenced by thermal expansion and contraction, fine gaps are respectively generated between the outer ring and the cylinder, and finally, the upper die holder is reset, and the workpiece is ejected out of the injection molding cavity through the ejection structure, so that the practicability of the die is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic top sectional view of the water cooling tank of the present utility model;

FIG. 3 is a schematic diagram showing the structure of the connection between the water inlet hard pipe B and the cylinder in a top view;

fig. 4 is a schematic view showing a bottom view of the connection between the ejector pin and the top plate.

In the figure: 1. a base; 2. a lower die holder; 3. a guide rod; 4. a top base; 5. an upper die holder; 6. a hydraulic cylinder A; 7. a cylinder; 8. an injection molding cavity; 9. an injection molding channel; 10. a water cooling cavity; 11. a hydraulic cylinder B; 12. a lifting plate; 13. a push rod; 14. a top plate; 15. a telescopic rod; 16. a water cooling tank; 17. a water inlet hard pipe A; 18. a water outlet hard pipe A; 19. a water inlet hard pipe B; 20. a water outlet hard pipe B; 21. a water inlet hose; 22. and a water outlet hose.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-4, the present utility model provides a technical solution: the utility model provides an integrative drawing of patterns ejecting injection mold of convex hollow injection molding, includes base 1, die holder 2, guide arm 3, footstock 4, upper die holder 5, pneumatic cylinder A6, cylinder 7, ejecting structure, first water-cooling structure and second water-cooling structure, die holder 2 is through a plurality of supporting legs fixed mounting in the upper end surface department of base 1, circular shape injection mold die cavity 8 has been seted up to the upper surface department of die holder 2, guide arm 3 is provided with four, four equal fixed mounting of guide arm 3 in the upper surface department of die holder 2, the bottom of footstock 4 and the top department fixed connection of four guide arm 3, the movable sleeve of upper die holder 5 is in the outside department of four guide arm 3, upper die holder 5 department is equipped with injection passage 9, pneumatic cylinder A6 is run through fixed mounting in footstock 4 department, the bottom telescopic end of pneumatic cylinder A6 and the top department fixed connection of upper die holder 5, cylinder 7 is fixed mounting in the bottom department of upper die holder 5, water-cooling cavity 10 has been seted up to the inside of cylinder 7, ejecting structure is in the top end 1 and the top of upper die holder 5, and the top of die holder 5 is in the die holder 8, the top structure is in the die holder 2 is located to the top of die holder 2.

The ejection structure comprises a hydraulic cylinder B11, a lifting plate 12, ejector rods 13 and an annular top plate 14, wherein the hydraulic cylinder B11 is fixedly arranged on the upper end surface of the base 1, the bottom of the lifting plate 12 is fixedly connected with the top telescopic end of the hydraulic cylinder B11, four ejector rods 13 are fixedly arranged on the top of the lifting plate 12 in an annular array mode, the four ejector rods 13 extend into the lower die holder 2 in a penetrating mode, the bottom of the top plate 14 is fixedly connected with the top of the four ejector rods 13, the top plate 14 is positioned at the bottom end of the injection die cavity 8, the upper surface of the top plate 14 is flush with the bottom surface of the injection die cavity 8, and therefore the lifting plate 12 and the ejector rods 13 can be driven to ascend through starting the hydraulic cylinder B11, the top plate 14 is driven to ascend, and a workpiece is ejected out of the injection die cavity 8;

the upper end surface of the base 1 is provided with a plurality of telescopic rods 15, and the tops of the telescopic rods 15 are fixedly connected with the bottom of the lifting plate 12, so that the stability of the lifting plate 12 during lifting is improved;

the first water cooling structure comprises an annular water cooling groove 16, a water inlet hard pipe A17 and a water outlet hard pipe A18, the water cooling groove 16 is formed in the lower die holder 2, the water cooling groove 16 is arranged at the outer part of the injection molding die cavity 8 in a surrounding mode, the water inlet hard pipe A17 and the water outlet hard pipe A18 are respectively fixedly arranged at two sides of the lower die holder 2 in a penetrating mode, the water inlet hard pipe A17 and the water outlet hard pipe A18 are respectively communicated with the two sides of the outer part of the water cooling groove 16, and the water inlet hard pipe A17 and the water outlet hard pipe A18 are respectively externally connected with a circulating water cooling mechanism, so that after injection molding of a workpiece is completed, water cooling heat exchange cooling treatment can be carried out on the outer ring of the workpiece in the injection molding die cavity 8 through the water inlet hard pipe A17 and the water outlet hard pipe A18 matched with the externally connected circulating water cooling mechanism;

the second water cooling structure comprises a water inlet hard tube B19, a water outlet hard tube B20, a water inlet hose 21 and a water outlet hose 22, wherein the water inlet hard tube B19 and the water outlet hard tube B20 are respectively arranged at two sides of the upper die holder 5 in a penetrating mode, the water inlet hard tube B19 and the water outlet hard tube B20 are respectively connected with the water cooling cavity 10 inside the cylinder 7 in a penetrating mode, the water inlet hose 21 and the water outlet hose 22 are respectively connected with the water inlet hard tube B19 and the water outlet hard tube B20 at one end, far away from the cylinder 7, of the water inlet hard tube B19 and the water outlet hard tube B20 in a communicating mode, and the water inlet hose 21 and the water outlet hose 22 are respectively connected with a circulating water cooling mechanism in an external mode, so that after injection molding of a workpiece is completed, the water inlet hose 21, the water inlet hard tube B19, the water outlet hard tube B20 and the water outlet hose 22 can be matched with the circulating water cooling mechanism, the cylinder 7 is cooled in a circulating water cooling mode, and the water cooling heat exchange cooling treatment is carried out at the inner ring of the workpiece in the injection molding cavity 8.

Working principle: when the hydraulic cylinder A6 is in operation, the upper die holder 5 and the lower die holder 2 are driven to be clamped, the bottom of the cylinder 7 is abutted against the injection die cavity 8, an annular cavity is formed between the hydraulic cylinder A7 and the injection die cavity 8, then injection molding of a workpiece can be carried out through the injection molding channel 9, after injection molding is completed, a water inlet hard pipe A17 and a water outlet hard pipe A18 are matched with an external circulating water cooling mechanism, water cooling heat exchange cooling treatment is carried out on the outer ring of the workpiece in the injection die cavity 8, meanwhile, the water inlet hose 21, the water inlet hard pipe B19, the water outlet hard pipe B20 and the water outlet hose 22 are matched with an external circulating water cooling mechanism, the cylinder 7 is cooled in a circulating water cooling manner, so that water cooling heat exchange cooling treatment is carried out on the inner ring of the workpiece in the injection die cavity 8, a fine gap is formed between the outer ring of the workpiece and the lower die holder 2 under the principle of thermal expansion and contraction, at the moment, the inner ring of the workpiece and the cylinder 7 are contracted, the hydraulic cylinder A6 is driven to lift and reset, the cylinder 7 is enabled to be separated from the workpiece, and finally, the lifting plate B11 and the lifting plate 12 and the lifting plate 13 are driven to lift the lifting plate 13, so that the workpiece can be ejected out, and the top plate 8 is conveniently in the injection molding treatment.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an integrative drawing of patterns ejecting injection mold of convex hollow injection molding, includes base (1), die holder (2), guide arm (3), footstock (4), upper die base (5), pneumatic cylinder A (6), cylinder (7), ejecting structure, first water-cooling structure and second water-cooling structure, its characterized in that: the die holder is characterized in that the die holder (2) is fixedly arranged at the upper end surface of the base (1) through a plurality of supporting legs, a circular injection molding die cavity (8) is formed in the upper surface of the die holder (2), four guide rods (3) are fixedly arranged at the upper surface of the die holder (2), the bottom of the top seat (4) is fixedly connected with the top ends of the four guide rods (3), the upper die holder (5) is movably sleeved at the outer parts of the four guide rods (3), an injection molding channel (9) is formed in the upper die holder (5), a hydraulic cylinder A (6) is fixedly arranged at the top seat (4) in a penetrating mode, the bottom telescopic end of the hydraulic cylinder A (6) is fixedly connected with the top part of the upper die holder (5), a water cooling cavity (10) is formed in the interior of the cylinder (7), an ejection structure is arranged at the upper end surface of the base (1), and the lower die holder (2) extends to the first die cavity (8) in the interior of the die holder (5).

2. The circular arc hollow injection molding integral demolding ejection injection mold according to claim 1, wherein: the ejector structure comprises a hydraulic cylinder B (11), lifting plates (12), ejector rods (13) and an annular top plate (14), wherein the hydraulic cylinder B (11) is fixedly arranged at the upper end surface of a base (1), the bottom of the lifting plates (12) is fixedly connected with the top telescopic end of the hydraulic cylinder B (11), the ejector rods (13) are four, the ejector rods (13) are fixedly arranged at the top of the lifting plates (12) in an annular array mode, the four ejector rods (13) are movably penetrated and extend into the inner portion of a lower die holder (2), the bottom of the top plate (14) is fixedly connected with the top of the four ejector rods (13), and the top plate (14) is positioned at the bottom of the inner portion of an injection molding die cavity (8), and the upper surface of the top plate (14) is flush with the bottom surface of the injection molding die cavity (8).

3. The circular arc hollow injection molding integral demolding ejection injection mold according to claim 1, wherein: the lifting device is characterized in that a plurality of telescopic rods (15) are arranged on the upper end surface of the base (1), and the tops of the telescopic rods (15) are fixedly connected with the bottom of the lifting plate (12).

4. The circular arc hollow injection molding integral demolding ejection injection mold according to claim 1, wherein: the first water cooling structure comprises an annular water cooling groove (16), a water inlet hard pipe A (17) and a water outlet hard pipe A (18), wherein the water cooling groove (16) is formed in the lower die holder (2), the water cooling groove (16) is located at the outer part of the injection molding die cavity (8) in a surrounding mode, the water inlet hard pipe A (17) and the water outlet hard pipe A (18) are respectively fixedly installed at two sides of the lower die holder (2) in a penetrating mode, the water inlet hard pipe A (17) and the water outlet hard pipe A (18) are respectively connected with the two outer sides of the water cooling groove (16) in a communicating mode, and the water inlet hard pipe A (17) and the water outlet hard pipe A (18) are externally connected with a circulating water cooling mechanism.

5. The circular arc hollow injection molding integral demolding ejection injection mold according to claim 1, wherein: the second water cooling structure comprises a water inlet hard pipe B (19), a water outlet hard pipe B (20), a water inlet hose (21) and a water outlet hose (22), wherein the water inlet hard pipe B (19) and the water outlet hard pipe B (20) are respectively installed on two sides of an upper die holder (5) in a penetrating mode, the water inlet hard pipe B (19) and the water outlet hard pipe B (20) are respectively connected with a water cooling cavity (10) inside the water inlet hard pipe B (7) in a penetrating mode, the water inlet hose (21) and the water outlet hose (22) are respectively connected with the water inlet hard pipe B (19) and the water outlet hard pipe B (20) in a communicating mode at one end of the cylinder (7), and the water inlet hose (21) and the water outlet hose (22) are respectively externally connected with a circulating water cooling mechanism.