CN212072795U

CN212072795U - Injection mold capable of improving injection mark of plastic finished product

Info

Publication number: CN212072795U
Application number: CN202020497707.9U
Authority: CN
Inventors: 姜发堂; 冯新荣; 陈穗榕; 张轩
Original assignee: Xiamen Hongyou Plastic Products Co ltd
Current assignee: Xiamen Hongyou Plastic Products Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-12-04
Anticipated expiration: 2030-04-08

Abstract

The utility model discloses a can improve injection mold of plastic finished product injection trace, including front mould and back mould, the front mould includes panel, A board and front mould benevolence, back mould includes bottom plate, thimble board, B board and back mould benevolence, be provided with the runner cover on the back mould, the off-the-shelf front mould benevolence of plastic, the back is towards the back mould benevolence, the runner of runner cover still includes a first oblique top towards the off-the-shelf back of plastic, a top sliding connection is on the thimble board to one side, first oblique top has the first end that is located under the runner to form one at the plastic finished product back and keep off gluey position during the pouring. The device has simple structure and ensures that the surface of the product has no trace.

Description

Injection mold capable of improving injection mark of plastic finished product

Technical Field

The utility model belongs to the technical field of the mould and specifically relates to an injection mold who can improve plastic finished product and spray trace is related to.

Background

The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

When cover plates, barrel covers and the like are used for products such as equipment surface shells or turnover covers in an injection molding mode, the surfaces of the products are required not to be provided with glue inlets and injection marks; in order to effectively reduce the production cost, direct delivery is required without any surface treatment after the product is molded, so that the requirement on the injection molding process of the product is high, and no defect can be caused on the surface of the product.

Disclosure of Invention

Accordingly, there is a need for an injection mold that can improve the injection mark of a plastic product without causing defects on the surface of the product.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a can improve injection mold of plastic finished product injection trace, includes front mould and back mould, the front mould includes panel, A board and front mould benevolence, back mould includes bottom plate, thimble board, B board and back mould benevolence, be provided with the runner cover on the back mould, the off-the-shelf front of plastic is towards front mould benevolence, and the back is towards the back mould benevolence, the runner of runner cover is towards the off-the-shelf back of plastic, still includes a first oblique top, first oblique top sliding connection is on the thimble board, first oblique top has the first end that is located under the runner to it glues the position to form one at the plastic finished product back when making the pouring.

Furthermore, a square iron for adjusting the moving stroke of the ejector plate is arranged between the bottom plate and the plate B.

Furthermore, an oil cylinder used for pushing the ejector plate to move is arranged on the plate B.

Furthermore, a plurality of second inclined ejectors used for forming an upper member of the plastic finished product are arranged between the front die core and the rear die core.

Furthermore, an inclined ejector seat used for being connected with the top of the inclined ejector in a sliding mode is fixed on the ejector plate.

Furthermore, be fixed with a plurality of oblique top guide blocks that let first oblique top or second oblique top pass respectively on the B board, be provided with the inclined hole that lets oblique top pass on the oblique top guide block, the inside wall and the laminating of oblique top periphery lateral wall of inclined hole.

Furthermore, a sprue of the sprue bush is positioned at the center of the back of the plastic finished product.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. through the cooperation of the first pitched roof and the sprue bush, a glue inlet and a spray mark cannot be generated on the surface of a product.

2. Simple structure, reasonable design and convenient use.

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

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

Fig. 2 is a top view of an embodiment of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a side view of an embodiment of the present invention.

Fig. 5 is a sectional view taken along line B-B in fig. 4.

Fig. 6 is a schematic structural diagram of a plastic product according to an embodiment of the present invention.

Fig. 7 is a schematic view of a structure of the plastic product and the first lifter according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of a second lifter according to an embodiment of the present invention.

In the figure: 1-rear die, 11-bottom plate, 12-square iron, 13-ejector plate, 14-B plate, 15-rear die core, 16-inclined ejector seat, 17-inclined ejector guide block, 2-front die, 21-A plate, 22-panel, 23-front die core, 3-sprue bush, 4-first inclined ejector, 41-first end, 5-second inclined ejector, 6-oil cylinder, 7-plastic finished product and 71-glue blocking position.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1-8, an injection mold capable of improving injection mark of a plastic product comprises a front mold 2, a rear mold 1, a sprue bush 3, a first lifter 4 and a plurality of second lifters 5.

The front die 2 comprises a panel 22, an A plate 21 and a front die core 23, and the rear die 1 comprises a bottom plate 11, square iron 12, an ejector plate 13, a B plate 14 and a rear die core 15. The square iron 12 is used to partition the B plate 14 from the base plate 11 to form a space in which the ejector plate 13 is movable.

The sprue bush 3 is arranged on the rear die 1, the front surface of the plastic finished product 7 faces the front die core 23, the back surface of the plastic finished product faces the rear die core 15, and a sprue of the sprue bush 3 faces the back surface of the plastic finished product 7.

The top of the first lifter 4 is slidably connected to the ejector plate 13, and the first lifter 4 has a first end 41 located right below the gate, so that a glue blocking position 71 is formed on the back of the plastic product during pouring. A raised glue blocking position 71 is formed on the back surface of the plastic finished product through the first end 41, so that a glue inlet and a spray mark are not formed on the back surface of the plastic finished product.

In this embodiment, the B plate 14 is provided with an oil cylinder 6 for pushing the ejector plate to move. The piston rod of the oil cylinder 6 is fixed on the ejector plate, and the oil cylinder 6 is fixed on the plate B. Thereby moving the first lifter 4 and the second lifter 5 to make the bottom of the lifter leave the protruding component on the plastic product, and then moving the rear mold to perform the demolding operation.

In this embodiment, the second slanted ejecting portion 5 is used to form a protruding or curved member on the plastic product. An inclined ejector base 16 used for being connected with the top of the inclined ejector in a sliding mode is fixed on the ejector plate 13, a sliding groove or a dovetail groove is formed in the inclined ejector base, the top of the first inclined ejector 4 moves on the sliding groove on the corresponding inclined ejector base, the second inclined ejector 5 moves on the dovetail groove on the corresponding inclined ejector base (a component matched with the dovetail groove is arranged at the top of the second inclined ejector), and under the condition that the thickness of part of the second inclined ejector is small, the top of the second inclined ejector moves on the dovetail groove through a pin shaft.

In this embodiment, the B plate 14 is fixed with a plurality of lifter guide blocks 17 for allowing the first lifter 4 or the second lifter 5 to pass through, the lifter guide blocks are provided with inclined holes for allowing the lifters to pass through, and inner side walls of the inclined holes are attached to outer side walls of the lifters.

In this embodiment, the gate of the gate sleeve 3 is located at the center of the back of the plastic product. The uniformity of the glue injection to flow to the peripheral side is ensured, and the deformation of the product is reduced.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a can improve plastic finished product and spray injection mold of trace, includes front mould and back mould, the front mould includes panel, A board and front mould benevolence, back mould includes bottom plate, thimble board, B board and back mould benevolence, its characterized in that: be provided with the runner cover on the back mould, the off-the-shelf front of plastic is towards front mould benevolence, and the back is towards the back mould benevolence, the runner of runner cover is towards the off-the-shelf back of plastic, still includes a first oblique top, first oblique top sliding connection is on the thimble board, first oblique top has the first end that is located under the runner to it glues the position to form one at the off-the-shelf back of plastic during the messenger pours.

2. The injection mold for improving injection mark of plastic product as claimed in claim 1, wherein: and a square iron for adjusting the moving stroke of the ejector pin plate is arranged between the bottom plate and the plate B.

3. The injection mold for improving injection mark of plastic product as claimed in claim 2, wherein: and an oil cylinder used for pushing the ejector plate to move is arranged on the plate B.

4. The injection mold for improving injection mark of plastic product as claimed in claim 1, wherein: and a plurality of second inclined ejectors used for forming the upper members of the plastic finished products are arranged between the front die core and the rear die core.

5. The injection mold for improving injection mark of plastic product as claimed in claim 4, wherein: and an inclined ejector seat used for being connected with the top of the inclined ejector in a sliding manner is fixed on the ejector plate.

6. The injection mold of claim 5, wherein the injection mold comprises: the B board is fixed with a plurality of oblique top guide blocks which respectively allow the first oblique top or the second oblique top to pass, the oblique top guide blocks are provided with oblique holes allowing the oblique tops to pass, and the inner side walls of the oblique holes are attached to the outer peripheral side walls of the oblique tops.

7. The injection mold for improving injection mark of plastic product as claimed in claim 1, wherein: and the sprue of the sprue bush is positioned in the center of the back of the plastic finished product.