Ejection structure for ejector pin marks on surface of product

Abstract

The utility model relates to the technical field of injection molds, in particular to an ejection structure for ejector pin marks on the surface of a product, which comprises a plate B and a plate A. A rear mold core connected with the plate B is arranged in the plate B, a front mold core corresponding to the rear mold core is arranged in the plate A, and a gap capable of forming the product is reserved between the rear mold core and the front mold core. And an ejection piece capable of ejecting a product between the rear mold core and the front mold core is arranged in the plate B. Compared with the prior art, the ejection structure for the ejector pin mark on the surface of the product has the advantages that by optimizing the structure, the problem of the ejector pin mark of the product is effectively solved, meanwhile, the disassembly and assembly procedures are simplified, the ejector pin mark can be directly taken out from a parting surface without mold disassembly, and later maintenance is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of ejection structure for product surface ejector mark. BACKGROUND

[0002] Affected by product structure space and appearance, there is skin on the surface of product, and ejector can only be set below skin, the defect of original ejector scheme will cause ejector back to be produced, affect product appearance. Increase product defect, lead to product production cost increase.

[0003] Due to the long ejector, and most of the area is void area, the ejector will have a tendency to bend back when it is subjected to injection pressure, and the pressure on the ejector will disappear when the filling and pressure holding are completed, at this time the ejector will have slight rebound extrusion product to cause ejector mark on product surface, so a kind of ejection structure for product surface ejector mark is presented. SUMMARY

[0004] (I) technical problem solved

[0005] In view of the deficiency of prior art, the utility model provides an ejection structure for product surface ejector mark, which solves the problem raised in the above background art.

[0006] (II) technical scheme

[0007] To achieve the above purpose, the utility model discloses the following technical scheme: an ejection structure for product surface ejector mark, comprising B plate and A plate, B plate is equipped with rear die core connected with B plate, A plate is equipped with front die core corresponding with rear die core, the gap capable of forming product is left between rear die core and front die core, B plate is equipped with ejector capable of ejecting product between rear die core and front die core.

[0008] Further, the ejector includes an ejector pin, and the top end of the ejector pin is provided with an ejector pin protrusion matched with the top end of the rear die core.

[0009] Further, the top surface of the ejector pin protrusion is kept in the same plane as the top end of the rear die core, and the diameter of the ejector pin protrusion is greater than the diameter of the ejector pin.

[0010] Further, the bottom of the rear die core is provided with a bottom plate, the bottom plate is provided with a lower ejector plate capable of moving up and down, the lower ejector plate is provided with an upper ejector plate connected with the lower ejector plate, and the bottom end of the ejector pin extends downward into the upper ejector plate.

[0011] Further, the lower ejector plate is provided with an ejector pin fixing bolt for fixing the ejector pin.

[0012] Further, the bottom plate is provided with a square block connected with the B plate, and the A plate is provided with a panel connected with the A plate.

[0013] Further, the outer part of the B plate is provided with a guide limiting structure connected with the B plate and capable of guiding and limiting when the A plate and the B plate are combined.

[0014] Further, the guide limiting structure comprises a connecting block installed on the outer wall of the B plate, the outer wall of the A plate is provided with a guide block capable of displacing along the sliding groove in the connecting block, and the connecting block is provided with a locking nut capable of being inserted into the guide block and locking the displacement of the guide block.

[0015] Further, the connecting block is installed in the B plate through a connecting block fixing bolt, and the outer wall of the connecting block is provided with a long groove matched with the locking nut.

[0016] Further, the guide limiting structure is symmetrically arranged on the two side walls of the B plate.

[0017] The installation sequence of the scheme is that the rear mold core, the B plate, the upper ejector plate, the lower ejector plate and the bottom plate are installed in sequence, the ejector pin is directly inserted from the surface of the rear mold core, and then the ejector pin is fixed in the upper ejector plate through an ejector pin fixing bolt.

[0018] Working principle: the mold is combined, after the mold is combined, injection molding, pressure maintaining and cooling are started (the supporting surface of the ejector pin can bear the injection molding and pressure maintaining pressure, so that the ejector pin can be effectively prevented from rebounding and extruding the product after being deformed under pressure), then the mold is opened, and after the mold is opened, the product can be ejected.

[0019] Compared with the prior art, the ejector structure for product surface ejector printing effectively improves the problem of product ejector printing, simplifies the disassembly and assembly process, and can directly take out from the parting surface without disassembling the mold, which is convenient for later maintenance and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a prior art structure schematic diagram of the utility model;

[0021] Figure 2 It is a structure schematic diagram of the utility model after improvement;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the utility model after improvement;

[0023] Figure 4 It is the utility model Figure 2Further improved structure schematic view of the utility model;

[0024] Figure 5 The utility model discloses Figure 4 Part structure schematic view in.

[0025] In the drawing: 1, front die; 2, rear die; 3, B plate; 4, upper ejector pin plate; 5, lower ejector pin plate; 6, ejector pin; 7, bottom plate; 8, A plate; 9, face plate; 10, ejection part; 11, ejector pin boss; 12, ejector pin fixing bolt; 13, square; 14, guide limiting structure; 15, connecting block; 16, guide block; 17, locking nut; 18, connecting block fixing bolt; 19, long slot. Specific embodiments

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Please refer to Figures 1 to 5 The utility model provides a kind of technical scheme: a kind of ejection structure for product surface ejector printing, including B plate 3 and A plate 8, B plate 3 is equipped with rear die 2 connected with B plate 3, A plate 8 is equipped with front die 1 corresponding with rear die 2, rear die 2 and front die 1 between leave the gap that can form product, B plate 3 is equipped with the ejection part 10 that can lift product between rear die 2 and front die 1, ejection part 10 includes ejector pin 6, the top of ejector pin 6 is equipped with ejector pin boss 11 matched with rear die 2, the upper surface of ejector pin boss 11 and the top position of rear die 2 keep same plane, the diameter of ejector pin boss 11 is greater than the diameter of ejector pin 6, the lower of rear die 2 is equipped with bottom plate 7, bottom plate 7 is equipped with lower ejector pin plate 5 that can be displaced up and down, lower ejector pin plate 5 is equipped with upper ejector pin plate 4 connected with lower ejector pin plate 5, the bottom of ejector pin 6 extends to upper ejector pin plate 4 downwards, lower ejector pin plate 5 is equipped with ejector pin fixing bolt 12 for fixing ejector pin 6, bottom plate 7 is equipped with square 13 connected with B plate 3, A plate 8 is equipped with face plate 9 connected with A plate 8, the outside of B plate 3 is equipped with guide limiting structure 14 connected with B plate 3 and can guide and limit when A plate 8 and B plate 3 are clamped, guide limiting structure 14 includes connecting block 15, connecting block 15 is installed on the outer wall of B plate 3, the outer wall of A plate 8 is equipped with guide block 16 that can be displaced along the sliding slot in connecting block 15, connecting block 15 is equipped with locking nut 17 that can be inserted into guide block 16 and can lock the displacement of guide block 16, connecting block 15 is installed in B plate 3 by connecting block fixing bolt 18, the outer wall of connecting block 15 is equipped with long slot 19 matched with locking nut 17, guide limiting structure 14 is symmetrically arranged in the two side walls of B plate 3.

[0028] In the description of the present application, the terms "connection", "installation", "fixation", "arrangement" and the like are understood broadly, for example, "connection" can be fixed connection or indirectly through intermediate components without affecting the relationship between the components and technical effects, or can be integrated connection or partial connection, as the case for the person skilled in the art, the specific meaning of the above terms in the present application or utility model can be understood according to the specific circumstances.

[0029] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An ejection structure for product surface pin printing, comprising a B plate (3) and an A plate (8), characterized in that The B plate (3) is provided with a rear die core (2) connected with the B plate (3), the A plate (8) is provided with a front die core (1) corresponding to the rear die core (2), a gap is left between the rear die core (2) and the front die core (1) to form a product, and the B plate (3) is provided with an ejector (10) capable of ejecting the product between the rear die core (2) and the front die core (1); The ejector (10) comprises a ejector pin (6), the top end of the ejector pin (6) is provided with an ejector pin protrusion (11) matched with the rear die core (2); the upper surface of the ejector pin protrusion (11) is in the same plane as the top end position of the rear die core (2), and the diameter of the ejector pin protrusion (11) is greater than that of the ejector pin (6); the lower side of the rear die core (2) is provided with a bottom plate (7), the bottom plate (7) is provided with a lower ejector plate (5) capable of moving up and down, the lower ejector plate (5) is provided with an upper ejector plate (4) connected with the lower ejector plate (5), and the bottom end of the ejector pin (6) extends downward into the upper ejector plate (4); the lower ejector plate (5) is provided with an ejector pin fixing bolt (12) for fixing the ejector pin (6); The outer side of the B plate (3) is provided with a guide limiting structure (14) connected with the B plate (3) and capable of guiding and limiting when the A plate (8) and the B plate (3) are clamped; the guide limiting structure (14) comprises a connecting block (15) installed on the outer wall of the B plate (3), the outer wall of the A plate (8) is provided with a guide block (16) capable of moving along the sliding groove in the connecting block (15), and the connecting block (15) is provided with a locking nut (17) capable of being inserted into the guide block (16) and capable of locking the displacement of the guide block (16).

2. The ejection structure for product surface pin printing according to claim 1, characterized in that: The bottom plate (7) is provided with a square block (13) connected with the B plate (3), and the A plate (8) is provided with a panel (9) connected with the A plate (8).

3. The ejection structure for product surface pin printing according to claim 1, wherein: The connecting block (15) is installed in the B plate (3) through a connecting block fixing bolt (18), and the outer wall of the connecting block (15) is provided with a long groove (19) matched with the locking nut (17).

4. The ejection structure for product surface pin printing according to claim 3, characterized in that: The guide limiting structure (14) is symmetrically arranged on the two side walls of the B plate (3).

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