CN218701010U

CN218701010U - Ejection mechanism of injection mold

Info

Publication number: CN218701010U
Application number: CN202222705333.7U
Authority: CN
Inventors: 王光辉
Original assignee: Hangzhou Deyue Intelligent Equipment Co ltd
Current assignee: Hangzhou Deyue Intelligent Equipment Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-03-24
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses an injection mold's ejection mechanism, including front mould benevolence (1), back mould benevolence (2) and roof (3), form the die cavity between front mould benevolence (1) and back mould benevolence (2), be equipped with the ejecting subassembly that penetrates the die cavity on roof (3), ejecting subassembly includes thimble (41), ejector pin (42) and square support needle (43) to one side, thimble (41) and ejector pin (42) to one side are located the peripheral position of die cavity, square support needle (43) are located the middle part of die cavity, top one side of ejector pin (42) to one side is equipped with inclined plane (421) and draw-in groove (422) in proper order, the bottom of ejector pin (42) to one side is equipped with buffer seat (423), the bottom of buffer seat (423) is equipped with footstock (424), footstock (424) and roof (3) fixed connection. The utility model has the characteristics of the drawing of patterns is stable, easy drawing of patterns.

Description

Ejection mechanism of injection mold

Technical Field

The utility model relates to an injection mold's part, especially an injection mold's ejection mechanism.

Background

The injection molding mold is characterized in that plastic is heated and melted in a heating material cylinder of an injection molding machine, then enters a mold cavity through a nozzle and a pouring system of the mold under the pushing of a screw rod or a piston of the injection molding machine, is cooled, solidified and shaped in the mold cavity, is opened, and then a molded plastic product is ejected out by using an ejection mechanism, so that the product can be taken out. The existing fan filter screen mold is characterized in that an ejection mechanism of the existing fan filter screen mold is generally a straight ejector pin, for example, the application number is CN201821691470.7, and the publication number is 2019.06.28, when the fan filter screen mold is subjected to injection molding, because gaps, ribs and column positions of the filter screen are more, during molding and demolding, a single straight ejector pin is not stable enough in a demolding process of a product, the product can shift, and a plastic product easily wraps the ejector pin or is clamped on the ejector pin, so that smooth demolding of the product is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold's ejection mechanism. The utility model has the characteristics of the drawing of patterns is stable, easy drawing of patterns.

The technical scheme of the utility model: the utility model provides an injection mold's ejection mechanism, including front mould benevolence, back mould benevolence and roof, form the die cavity between front mould benevolence and the back mould benevolence, be equipped with the ejecting subassembly that penetrates the die cavity on the roof, ejecting subassembly includes thimble, oblique ejector pin and square support needle, thimble and oblique ejector pin are located the peripheral position of die cavity, square support needle is located the middle part of die cavity, top one side of oblique ejector pin is equipped with inclined plane and draw-in groove in proper order, the bottom of oblique ejector pin is equipped with the cushion socket, the bottom of cushion socket is equipped with the footstock, footstock and roof fixed connection.

In the ejection mechanism of the injection mold, the bottom end of the inclined ejector rod is provided with a ball head block, and the top of the buffer seat is provided with a ball head groove which is in fit connection with the ball head block; the bottom of the buffer seat is provided with a T-shaped clamping block, and the top of the top seat is provided with a clamping groove clamped with the T-shaped clamping block.

In the ejection mechanism of the injection mold, the plurality of inclined ejector rods are respectively located on four sides of the cavity, and each inclined ejector rod is inclined outwards.

In the aforementioned ejection mechanism for injection molds, the bottom surface of the rear mold core is provided with the water inlet pipe, the water outlet pipe and the U-shaped pipe communicated with the water inlet pipe and the water outlet pipe, the water inlet pipe and the water outlet pipe are respectively provided with a connector connected with the two ends of the U-shaped pipe and the screw thread, the U-shaped groove of the U-shaped pipe is internally provided with the shunt pipes which are distributed in a crossed manner, and the rear mold core is detachably connected with the water inlet pipe, the water outlet pipe and the U-shaped pipe through the U-shaped sleeve.

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

the ejection assembly in the utility model is formed by matching an ejector pin, an oblique ejector rod and a square supporting needle together, wherein the ejector pin and the oblique ejector rod are positioned at the peripheral position of a cavity and correspond to the edge of a product, and the square supporting needle is positioned at the middle part of the cavity and corresponds to a rib in the product, so that the ejection assembly can be stably demoulded, has high strength and is not easy to deform; the top of the inclined ejector rod is designed into an inclined plane, and is matched with the clamping groove to be abutted against the clamping edge of a product, so that the material pushing process can be stabilized in the material pushing process, the product is prevented from deviating, and meanwhile, the inclined ejector rod is not easy to wrap by the sizing material, and the demoulding is easier; the buffer seat is arranged between the oblique ejector rod and the ejector seat, the oblique ejector rod can form a buffer process on the buffer seat when being ejected, on one hand, a part of friction force is decomposed, the deformation of the oblique ejector rod caused by overlarge friction force is avoided, and on the other hand, the position of the oblique ejector rod is also properly adjusted, so that the clamping groove and a product can be abutted accurately to stabilize the demoulding.

Drawings

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

FIG. 2 is a schematic view of the top end structure of the lifter;

FIG. 3 is a schematic view of the bottom end structure of the lifter bar;

FIG. 4 is a schematic view of the bottom surface of the rear mold core.

The labels in the figures are: 1. a front mold core; 2. a rear mold core; 21. a water inlet pipe; 22. a water outlet pipe; 23. a U-shaped tube; 24. a shunt tube; 25. a U-shaped sleeve; 3. a top plate; 41. a thimble; 42. an oblique ejector rod; 421. an inclined surface; 422. a card slot; 423. a buffer base; 424. a top seat; 425. a ball head block; 426. a T-shaped fixture block; 43. a square supporting needle; 5. and (5) producing the product.

Detailed Description

The present invention will be further described with reference to the drawings and examples, which should not be construed as a limitation to the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example (b):

as shown in fig. 1-4, an ejection mechanism of an injection mold comprises a front mold core 1, a rear mold core 2 and a top plate 3, a cavity is formed between the front mold core 1 and the rear mold core 2, an ejection assembly penetrating into the cavity is arranged on the top plate 3, the ejection assembly comprises an ejector pin 41, an oblique ejector rod 42 and a square supporting pin 43, the ejector pin 41 and the oblique ejector rod 42 are located at the peripheral position of the cavity and correspond to the edge of a product 5, the square supporting pin 43 is located at the middle part of the cavity and corresponds to ribs in the product 5, an inclined surface 421 and a clamping groove 422 are sequentially arranged on one side of the top of the oblique ejector rod 42, a buffer base 423 is arranged at the bottom of the oblique ejector rod 42, an ejector base 424 is arranged at the bottom of the buffer base 423, and the ejector base 424 is fixedly connected with the top plate 3.

The bottom end of the oblique ejector rod 42 is provided with a ball head block 425, and the top of the buffer seat 423 is provided with a ball head groove which is matched and connected with the ball head block 425; the bottom end of the buffer seat 423 is provided with a T-shaped fixture block 426, and the top of the top seat 424 is provided with a clamping groove 422 clamped with the T-shaped fixture block 426.

The inclined ejector rods 42 are provided with a plurality of inclined ejector rods, the inclined ejector rods are respectively located on four sides of the cavity, and each inclined ejector rod 42 is inclined outwards.

The bottom surface of back mould benevolence 2 is equipped with inlet tube 21, outlet pipe 22 and communicates inlet tube 21, the U-shaped pipe 23 of outlet pipe 22, all be equipped with on inlet tube 21 and the outlet pipe 22 with the both ends of U-shaped pipe 23 and threaded connection's connector, be equipped with cross distribution's shunt tubes 24 in the U-shaped notch of U-shaped pipe 23, back mould benevolence 2 can dismantle with inlet tube 21, outlet pipe 22 and U-shaped pipe 23 and be connected through U-shaped sleeve 25.

The utility model discloses when moulding plastics, the drawing of patterns, roof 3 takes place to remove under the effect of drive power to drive ejecting subassembly and take place to remove, cooperate drawing of patterns and the work of moulding plastics. The ejection assembly is formed by matching an ejector pin 41, an inclined ejector rod 42 and a square supporting pin 43 together, wherein the ejector pin 41 and the inclined ejector rod 42 are located at the peripheral position of the cavity and correspond to the edge of a product, and the square supporting pin 43 is located in the middle of the cavity and corresponds to ribs in the product, so that the ejection assembly can be stably demoulded, is high in strength and is not easy to deform; the top of the inclined ejector rod 42 is designed into an inclined surface 421, and is matched with the clamping groove 422 to be abutted against the clamping edge of the product, so that the material pushing process can be stabilized in the material pushing process, the product is prevented from deviating, and meanwhile, the inclined ejector rod 42 is not easily wrapped by the rubber material, so that the product is easier to demould; be equipped with buffer seat 423 between oblique ejector pin 42 and footstock 424, oblique ejector pin 42 when ejecting, can form the buffering process on buffer seat 423, decomposes partly frictional force on the one hand, avoids causing oblique ejector pin 42's deformation because of frictional force is too big, and on the other hand also suitably adjusts oblique ejector pin 42's position for draw-in groove 422 and product can carry out the butt comparatively accurately and stabilize the drawing of patterns.

Through the bottom surface setting of back mould benevolence 2 by inlet tube 21, outlet pipe 22, U-shaped pipe 23 and shunt tubes 24 constitution mould cooling structure, cooling structure can be connected with outside water source and water pump, forms the cooling water flow that flows, evenly cools off the product fast, and cooling structure establishes in the bottom surface of back mould benevolence 2, both close with the product distance, the absorption heat that can be better, can dismantle the connection through U-shaped sleeve 25 again, handles such as convenient change, maintenance.

The details of the present invention are not described in the prior art, and therefore, are not specifically described herein.

Claims

1. The utility model provides an injection mold's ejection mechanism which characterized in that: including front mould benevolence (1), back mould benevolence (2) and roof (3), form the die cavity between front mould benevolence (1) and back mould benevolence (2), be equipped with the ejecting subassembly that penetrates the die cavity on roof (3), ejecting subassembly includes thimble (41), oblique ejector pin (42) and square support needle (43), thimble (41) and oblique ejector pin (42) are located the peripheral position of die cavity, square support needle (43) are located the middle part of die cavity, top one side of oblique ejector pin (42) is equipped with inclined plane (421) and draw-in groove (422) in proper order, the bottom of oblique ejector pin (42) is equipped with buffer base (423), the bottom of buffer base (423) is equipped with footstock (424), footstock (424) and roof (3) fixed connection.

2. The ejection mechanism of an injection mold according to claim 1, wherein: the bottom end of the oblique ejector rod (42) is provided with a ball head block (425), and the top of the buffer seat (423) is provided with a ball head groove which is matched and connected with the ball head block (425); the bottom end of the buffer seat (423) is provided with a T-shaped fixture block (426), and the top of the top seat (424) is provided with a clamping groove (422) clamped with the T-shaped fixture block (426).

3. The ejection mechanism of an injection mold according to claim 1, wherein: the inclined ejector rods (42) are arranged and are respectively positioned on four sides of the cavity, and each inclined ejector rod (42) is inclined outwards.

4. The ejection mechanism of an injection mold according to claim 1, wherein: the bottom surface of back mould benevolence (2) is equipped with inlet tube (21), outlet pipe (22) and communicates inlet tube (21), U-shaped pipe (23) of outlet pipe (22), all be equipped with on inlet tube (21) and outlet pipe (22) with the both ends and the connector of threaded connection of U-shaped pipe (23), be equipped with cross distribution's shunt tubes (24) in the U-shaped notch of U-shaped pipe (23), back mould benevolence (2) can be dismantled through U-shaped sleeve (25) and inlet tube (21), outlet pipe (22) and U-shaped pipe (23) and be connected.