Die structure with delayed sliding block

Abstract

The utility model provides a slide block time-delay mold structure. The technical scheme is that a guide needle is mounted at a front mold part of a mold; when the die is closed, the sliding block is closed in place, and then a guide needle mounted on the front die penetrates through a hole of a product iron piece to guide and position the product iron piece (the situation that the product and the die are damaged by the closing die due to the fact that the iron piece is not mounted in place or the iron piece slightly shakes in the die) when the die is closed is prevented; when the mold is opened after injection molding is completed, the sliding block retreats after the front mold starts to be opened for a certain distance, and then a product is ejected out. The mold with the structure is simple in manufacturing process and convenient to assemble, and can effectively solve the problems that in the product forming process, due to the fact that an iron part is not installed in place or the iron part shakes in the mold, the product is crushed and the mold is collapsed during mold closing of a product formed by a plastic coated iron part. And the number of times of mold repairing is reduced while the qualified rate of products is increased.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically providing a mold structure with slider delay. Background Technology

[0002] Many products are made by encasing metal parts in plastic. For these types of products, the metal parts need to be placed in a mold and fixed before injection molding. For these products, it's crucial to consider ease of positioning and ensure easy sealing of the encapsulated areas. However, due to the varying functions and structures of different products, the metal parts often cannot be securely fixed in the mold. This necessitates adding mechanisms to the mold design to assist in positioning the metal parts. Such mechanisms can more effectively save labor and shorten the production cycle, reduce mold repairs, and more stably and effectively guarantee product quality. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this utility model provides a slider delay mold structure:

[0004] A slider-delay mold structure includes an upper mold, a lower mold, and a cavity;

[0005] The upper mold includes an upper fixing plate, a hot runner plate, and an A plate that are stacked and fixed in sequence;

[0006] The lower mold includes a B plate, a support layer, and a lower fixing plate that are stacked and fixed in sequence;

[0007] The support layer includes an upper ejector plate, a lower ejector plate, and support columns;

[0008] The cavity includes: a front mold core, a rear mold core, a slanted guide post fixing seat, a slanted guide post, a front mold guide pin, a wear-resistant block, a slider seat, a slider, a spring, a slider stop, and a slider pressure block.

[0009] The front mold core is set in the groove of plate A and fixed with screws; the front mold guide pin is installed in the front mold core, and the lower end of the front mold guide pin passes through the lower surface of the front mold core; the inclined guide post is fixed in the front mold core by the inclined guide post fixing seat;

[0010] The rear mold core is set in the groove of plate B and fixed with screws; the slider seat is installed in the rear mold core; the slider seat is provided with an inclined hole that matches the inclined guide post; the wear-resistant block is connected to the slider seat with screws; the slider is fixed to the slider seat with screws; the slider pressure block is installed on both sides of the slider seat; the slider stop is installed at the front end of the slider seat.

[0011] Preferably, the lower end of the front mold guide pin extends 3-7 mm beyond the lower surface of the front mold core.

[0012] Preferably, the slider is provided with a slot that matches the lower end of the mold guide pin.

[0013] Preferably, the diameter of the oblique hole in the slider seat is 1~2mm larger than that of the oblique guide post.

[0014] Preferably, the wear-resistant block is provided with an upper inclined surface, a vertical surface and a lower inclined surface; the A plate is provided with an upper inclined surface, a vertical surface and a lower inclined surface that match the wear-resistant block.

[0015] Beneficial effects: This utility model provides a slider delay mold structure. The technical solution is that a guide pin is installed on the front mold part of the mold. When the mold is closed, the slider is closed in place, and then the guide pin installed on the front mold passes through the hole of the product iron part to guide and position the product iron part (to prevent the product and mold from being damaged when the mold is closed due to the iron part not being installed in place or the iron part having slight shaking in the mold). When the mold is opened after the injection molding is completed, the front mold starts to open a certain distance and then the slider retracts, and then the product is ejected.

[0016] This mold structure is simple to manufacture and easy to assemble. During the product molding process, it can effectively solve the problem of product damage or mold collapse caused by improper installation of iron parts or iron parts shaking in the mold when the mold is closed. This improves the product qualification rate and reduces the number of mold repairs. Attached Figure Description

[0017] Figure 1 This utility model provides an overall assembly diagram of a slider delay mold;

[0018] Figure 2 A partially enlarged schematic diagram of a slider delay mold provided by this utility model;

[0019] Referring to the accompanying drawings, the following explanations are provided:

[0020] 1— Upper fixing plate

[0021] 2— Hot runner plate

[0022] 3— A board

[0023] 4—B board

[0024] 5— Upper ejector plate

[0025] 6— Lower fixing plate

[0026] 7— Supporting Columns

[0027] 8— Forehead

[0028] 9— Post-model kernel

[0029] 10— Inclined guide post fixing seat

[0030] 11— Inclined Guide Post

[0031] 12— Front mold guide pin

[0032] 13— Wear-resistant blocks

[0033] 14— Slider base

[0034] 15— Slider

[0035] 16— Spring

[0036] 17— Lower ejector plate

[0037] 18— Product Iron Parts

[0038] 19— Slider stop

[0039] 20— Sliding block Detailed Implementation

[0040] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description, in conjunction with specific embodiments and accompanying drawings, will illustrate the composition and connection relationships of the mold components:

[0041] A slider-delay mold structure includes: an upper mold, a lower mold, and a cavity;

[0042] The upper mold includes an upper fixing plate 1, a hot runner plate 2, and an A plate 3, which are stacked and fixed in sequence.

[0043] The lower mold includes a B plate 4, a support layer, and a lower fixed plate 6 that are stacked and fixed in sequence; the support layer includes an upper ejector plate 5, a lower ejector plate 17, and a support column 7.

[0044] The cavity includes: front mold core 8, rear mold core 9, inclined guide post fixing seat 10, inclined guide post 11, front mold guide pin 12, wear-resistant block 13, slider seat 14, slider 15, spring 16, slider stop 19, and slider pressure block 20.

[0045] The front mold core 8 is set in the groove of plate A 3 and fixed with screws;

[0046] The front mold guide pin 12 is installed inside the front mold core 8, and the lower end of the front mold guide pin 12 passes through the lower surface of the front mold core 8; the lower end of the front mold guide pin 12 extends 3~7mm beyond the lower surface of the front mold core 8 (this value depends on the value of the iron parts of the product).

[0047] The inclined guide post 11 is fixed inside the front mold core 8 by the inclined guide post fixing seat 10;

[0048] The rear mold core 9 is set in the groove provided in plate B 4 and fixed with screws;

[0049] The slider seat 14 is installed inside the rear mold core 9, and the slider 15 is provided with a slot that matches the lower end of the front mold guide pin 12; the diameter of the oblique hole of the slider seat 14 is 1~2mm larger than the diameter of the oblique guide post 11 (this is a clearance design).

[0050] The wear-resistant block 13 is connected to the slider seat 14 with screws; the wear-resistant block 14 is provided with an upper inclined surface, a vertical surface and a lower inclined surface; the A plate 3 is provided with an upper inclined surface, a vertical surface and a lower inclined surface that match the wear-resistant block 13;

[0051] Slider 15 is fixed to slider base 14 with screws;

[0052] Slider pressure block 20 is installed on both sides of slider seat 14; slider stop block 19 is installed at the front end of slider seat 14; (the slider pressure block 20 can press down on both sides of slider seat 14, and under the action of slider pressure block 20 and slider stop block 19, slider 15 can only slide left and right on B plate).

[0053] The working principle of the mold is explained below:

[0054] 1. Explanation of the slider delay structure during mold closing and opening processes.

[0055] (1) Assemble the mold as a whole and fix the mold on the injection molding machine. At this time, the mold is in the open state;

[0056] (2) In the open mold state, the iron part is placed into the rear mold core 9 and fixed. (Since the iron part needs to be placed manually, an installation gap needs to be left in the mold design process, which is what we often call clearance. At this time, the iron part placed into the rear mold core 9 cannot be completely fixed. The iron part still has a certain amount of space to move in the mold.)

[0057] (3) After the iron parts are placed, the mold begins to close; during the mold closing process, the part below B plate 4 moves upward, and the inclined guide post 11 installed on A plate 3 passes through the inclined hole set in the slider seat 14. After the inclined guide post 11 passes through the inclined hole set in the slider seat 14, the wear-resistant block 13 installed on the slider seat 14 and the groove set in A plate 3 fit together; according to the enlarged view A, it can be seen that there is a clearance on the left side of the inclined hole set in the slider seat 14 and the inclined guide post 11, and an inclined surface is set above the position where the wear-resistant block 13 and A plate 3 fit together, and then a vertical surface is set (when the vertical surface of the groove set in A plate 3 and the vertical surface of the wear-resistant block 13 fit together when the mold is closed, it means that the slider 15 has been closed in the mold). There is also an inclined surface below the vertical surface; the structural design here is to allow the slider 15 to close in the mold first, and then A plate 3 and B plate 4 close in the mold.

[0058] (4) After mold closing, the iron part 18 is injection molded;

[0059] (5) After injection molding is completed, the mold is opened; during the mold opening process, the part below B plate 4 moves downward. At this time, because a vertical surface is provided on the wear-resistant block 13 and a clearance is provided between the inclined guide post 11 and the inclined hole of the slider seat 14, the slider 15 will not move to the left at the beginning of the mold opening movement.

[0060] (6) When the mold opens to a certain distance, the slider 15 moves to the left under the action of the spring 16 and the inclined guide post 11. The structure designed here allows the slider to exit after a delay when the mold opens.

[0061] 2. Instructions for fixing and injection molding the product's iron parts 18 during mold closing and opening:

[0062] (1) During the mold closing process, the slider 15 closes into position first (when the slider 15 is in position, the front mold guide pin 12 has not yet contacted the iron part 18); the front mold guide pin 12 installed on the front mold core 8 is 3~5mm higher than the surface of the front mold core 8;

[0063] (2) After slider 15 is in place, the mold continues to close;

[0064] (3) In the mold closed state, the lower end of the front mold guide pin 12 installed on the front mold core 8 passes through the groove of the product iron part 18 and is placed in the corresponding groove of the slider 15, which plays the role of guiding the iron part 18 (the iron part 18 will shake due to the existence of the clearance after it is installed in the rear mold core 9, and the exposed part of the iron part 18 needs to be sealed with glue. If the exposed part of the iron part 18 is not in the correct position, it is easy to damage the product or collapse the mold when the mold is closed); at this time, after the iron part 18 is fixed by the front mold guide pin 12, the exposed part of the iron part 18 needs to be sealed with glue.

[0065] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A slide delay mold structure, characterized by, The injection molding machine comprises an upper mold, a lower mold and a cavity; The upper mold comprises an upper fixed plate, a hot runner plate and an A plate which are fixed in sequence; The lower mold comprises a B plate, a support layer and a lower fixed plate which are fixed in sequence; the support layer comprises an upper ejector plate, a lower ejector plate and a support column; The cavity comprises a front mold core, a rear mold core, an inclined guide pillar fixing seat, an inclined guide pillar, a front mold guide pin, a wear-resistant block, a slider seat, a slider, a spring, a slider stopper and a slider pressing block; The front mold core is arranged in a groove of the A plate and is fixed by screws; the front mold guide pin is installed in the front mold core, and the lower end of the front mold guide pin penetrates the lower surface of the front mold core; the inclined guide pillar is fixed in the front mold core through the inclined guide pillar fixing seat; The rear mold core is arranged in a groove of the B plate and is fixed by screws; the slider seat is installed in the rear mold core; the slider seat is provided with an inclined hole matched with the inclined guide pillar; the wear-resistant block is connected with the slider seat by screws; the slider is fixed on the slider seat by screws; the slider pressing block is installed on both sides of the slider seat; the slider stopper is installed at the front end of the slider seat.

2. The slide delay mold structure of claim 1, wherein: The lower end of the front mold guide pin extends 3-7 mm beyond the lower surface of the front mold core.

3. The slide delay mold structure of claim 1, wherein: The slider is provided with a slot hole matched with the lower end of the mold guide pin.

4. The slide delay mold structure of claim 1, wherein: The hole diameter of the inclined hole of the slider seat is 1-2 mm larger than that of the inclined guide pillar.

5. The slide delay mold structure of claim 1, wherein: The wear-resistant block is provided with an upper inclined surface, a vertical surface and a lower inclined surface; the A plate is provided with an upper inclined surface, a vertical surface and a lower inclined surface matched with the wear-resistant block.

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