Core-pulling secondary sliding block mechanism for automobile headrest plastic part injection mold

Abstract

The utility model discloses a core-pulling secondary slider mechanism for an injection mold of an automobile headrest plastic part, which comprises a guide rail, a connecting plate, an oil cylinder, a first slider component, a second slider component and a shovel base, the cylinder body of the oil cylinder is fixedly connected with the connecting plate, the first slider component and the second slider component are slidably connected with the guide rail, and the shovel base is fixedly connected with the guide rail. The first sliding block assembly and the second sliding block assembly are connected in a fastened mode, the shovel base is connected with a movable mold plate of an injection mold and can be inserted into the first sliding block assembly, mold opening is conducted firstly, reverse buckle demolding of a first inserting buckle hole and a second inserting buckle hole is completed through the shovel base, then an oil cylinder shrinks to conduct demolding of a plastic part, and continuous completion of reverse buckle demolding and core pulling is achieved. The product demolding problem is not easy to occur, the demolding efficiency and the product yield are improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold technical field, specifically, the utility model relates to a core-pulling secondary sliding block mechanism for automobile headrest plastic part injection mold. BACKGROUND

[0002] As Figure 1 The automobile headrest plastic part 1-1 is provided with a first cavity 1-2 on one side, a first side cavity 1-3 is arranged on the side of the first cavity 1-2, a first upper cavity 1-4 is arranged on the upper surface of the first cavity 1-2, and a first insertion buckle hole 1-5 is arranged at the upper and lower positions of the first cavity 1-2. The automobile headrest plastic part 1-1 is provided with a second cavity 1-6 on the other side, a second side cavity 1-7 is arranged on the side of the second cavity 1-6, a second upper cavity 1-8 is arranged on the upper surface of the second cavity 1-6, and a second insertion buckle hole 1-9 is arranged at the upper and lower positions of the second cavity 1-6.

[0003] The first cavity 1-2, the first side cavity 1-3, the first upper cavity 1-4, the second cavity 1-6, the second side cavity 1-7 and the second upper cavity 1-8 are all cavity structures with small inner dimensions and large outer dimensions. The first insertion buckle hole 1-5 and the second insertion buckle hole 1-9 need to be demolded first before the core-pulling work can be completed.

[0004] It is a technical problem to be solved to realize the demolding of the first insertion buckle hole 1-5 and the second insertion buckle hole 1-9 by using a small row position on a large row position. INVENTION CONTENTS

[0005] The utility model provides a core-pulling secondary sliding block mechanism for automobile headrest plastic part injection mold to solve the problems in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme: a core-pulling secondary sliding block mechanism for automobile headrest plastic part injection mold, comprising a guide rail, a connecting plate, an oil cylinder, a first sliding block assembly, a second sliding block assembly and a spade base, the oil cylinder body is fastened and connected with the connecting plate, the first sliding block assembly and the second sliding block assembly are slidably connected with the guide rail, the first sliding block assembly and the second sliding block assembly are fastened and connected, the spade base is connected with the movable die plate of the injection mold and can be inserted into the first sliding block assembly.

[0007] Preferably, the first slider assembly comprises a first slider base, a first wedge-shaped slider, a first upper buckle slider, a first lower buckle slider, a second wedge-shaped slider, a second upper buckle slider and a second lower buckle slider, the first slider base is provided with a first through hole, a first step, a second through hole and a second step, the first wedge-shaped slider is in sliding connection with the first through hole and is limited by the first step, the second wedge-shaped slider is in sliding connection with the second through hole and is limited by the second step, the first upper buckle slider is arranged above the first wedge-shaped slider and is in sliding connection with the first wedge-shaped slider through a dovetail groove structure, the first lower buckle slider is arranged below the first wedge-shaped slider and is in sliding connection with the first wedge-shaped slider through the dovetail groove structure, the second upper buckle slider is arranged above the second wedge-shaped slider and is in sliding connection with the second wedge-shaped slider through the dovetail groove structure, and the second lower buckle slider is arranged below the second wedge-shaped slider and is in sliding connection with the second wedge-shaped slider through the dovetail groove structure.

[0008] Preferably, rear limiting plates are arranged at the rear ends of the first through hole and the second through hole respectively.

[0009] Preferably, a first limiting part for cooperating with the first step is arranged at the rear end of the first wedge-shaped slider, and a second limiting part for cooperating with the second step is arranged at the rear end of the second wedge-shaped slider.

[0010] Preferably, a vertical through hole is arranged on the first slider base, and oblique through holes are arranged at the middle parts of the first wedge-shaped slider and the second wedge-shaped slider.

[0011] Preferably, the second slider assembly comprises a second slider base, a main core-pulling slider one, an upper core-pulling slider one, a side core-pulling slider one, a main core-pulling slider two, an upper core-pulling slider two and a side core-pulling slider two, the second slider base is provided with a third through hole and a fourth through hole, the main core-pulling slider one, the upper core-pulling slider one and the side core-pulling slider one are in limiting insertion with the third through hole respectively, and the main core-pulling slider two, the upper core-pulling slider two and the side core-pulling slider two are in limiting insertion with the fourth through hole respectively; U-shaped grooves are arranged on the main core-pulling slider one and the main core-pulling slider two, and the first wedge-shaped slider, the first upper buckle slider and the first lower buckle slider are embedded in the U-shaped groove on the main core-pulling slider one; the second wedge-shaped slider, the second upper buckle slider and the second lower buckle slider are embedded in the U-shaped groove on the main core-pulling slider two.

[0012] Preferably, first mounting plates and second mounting plates are symmetrically arranged on the connecting plate respectively, a first travel switch is arranged on the first mounting plate, and a second travel switch is arranged on the second mounting plate; a support is arranged on the first slider assembly, and a travel control rod is arranged on the support.

[0013] The beneficial effects of the above technical solutions are:

[0014] 1. The core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold of the utility model, adopts the first mold opening to complete the reverse buckle demolding of the first and second plug-in buckle holes through the shovel base, then the oil cylinder is retracted to demold the plastic part, realizes the continuous completion of the reverse buckle demolding and core pulling, is not easy to cause the product demolding problem, improves the demolding efficiency and product excellent rate, and reduces the production cost.

[0015] 2. The core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold of the utility model, in the whole mold opening large row, the first and second wedge-shaped sliding blocks are driven through the shovel base, the first wedge-shaped sliding block drives the first upper and lower buckle sliding blocks, and the second wedge-shaped sliding block drives the second upper and lower buckle sliding blocks, so that the first and second plug-in buckle holes are demolded first, and then the core pulling is realized by the contraction of the oil cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the automobile headrest plastic part in the background art;

[0017] Figure 2 It is an assembly drawing of the core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold of the utility model;

[0018] Figure 3 It is an explosion view of the core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold of the utility model;

[0019] Figure 4 It is a mold clamping flowchart of the core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold;

[0020] Figure 5 It is an internal schematic view of the mold clamping flowchart of the core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold;

[0021] Among them:

[0022] 1-1, automobile headrest plastic part; 1-2, first cavity; 1-3, first side cavity; 1-4, first upper cavity; 1-5, first plug-in buckle hole; 1-6, second cavity; 1-7, second side cavity; 1-8, second upper cavity; 1-9, second plug-in buckle hole;

[0023] 1, guide rail; 2, connecting plate; 3, oil cylinder; 4, first sliding block assembly; 5, second sliding block assembly; 6, shovel base;

[0024] 20, first mounting plate; 20-1, first travel switch; 21, second mounting plate; 21-1, second travel switch; 22, support; 23, travel control rod;

[0025] 30, connecting rod;

[0026] 4-1, first slider seat; 4-10, rear limit plate; 40, first through hole; 40-1, first step; 41, second through hole; 41-1, second step; 42, vertical through hole;

[0027] 4-2, first wedge-shaped slider; 43, first limit part; 44, first upper buckle slider; 45, first lower buckle slider;

[0028] 4-3, second wedge-shaped slider; 46, second limit part; 47, second upper buckle slider; 48, second lower buckle slider;

[0029] 400, inclined through hole;

[0030] 5-1, second slider seat; 50, third through hole; 51, fourth through hole; 5-2, main core-pulling slider one; 5-3, upper core-pulling slider one; 5-4, side core-pulling slider one; 5-5, main core-pulling slider two; 5-6, upper core-pulling slider two; 5-7, side core-pulling slider two; 500, U-shaped groove. DETAILED DESCRIPTION

[0031] The specific embodiments of the utility model will be further described below with reference to the drawings and the embodiments, the purpose is to help the technical personnel in the field to have more complete, accurate and in-depth understanding of the concept, technical scheme of the utility model, and to help its implementation.

[0032] As Figures 1 to 5 shown, the utility model is a kind of core-pulling secondary slider mechanism for automobile headrest plastic injection mould, first mould is opened by spade base to complete the reverse buckle demoulding of first insert buckle hole and second insert buckle hole, then plastic part demoulding is carried out by oil cylinder contraction, realizes the continuous completion of reverse buckle demoulding and core-pulling, product demoulding problem is not easy to occur, improves demoulding efficiency and product excellent rate, reduces production cost.

[0033] Specifically, as Figures 1 to 5 shown, including guide rail 1, connecting plate 2, oil cylinder 3, first slider assembly 4, second slider assembly 5 and spade base 6, the oil cylinder 3 cylinder body is fastened with connecting plate 2, the first slider assembly 4 and second slider assembly 5 are slidably connected with guide rail 1, the first slider assembly 4 and second slider assembly 5 are fastened, the spade base 6 is connected with the movable die plate of injection mould, and can be inserted into first slider assembly 4.

[0034] The first slider assembly 4 comprises a first slider seat 4-1, a first wedge-shaped slider 4-2, a first upper buckle slider 44, a first lower buckle slider 45, a second wedge-shaped slider 4-3, a second upper buckle slider 47 and a second lower buckle slider 48, the first slider seat 4-1 is provided with a first through hole 40, a first step 40-1, a second through hole 41 and a second step 41-1, the first wedge-shaped slider 4-2 is in sliding connection with the first through hole 40 and is limited by the first step 40-1, the second wedge-shaped slider 4-3 is in sliding connection with the second through hole 41 and is limited by the second step 41-1, the first upper buckle slider 44 is arranged above the first wedge-shaped slider 4-2 and is in sliding connection with the first wedge-shaped slider 4-2 through a dovetail groove structure, the first lower buckle slider 45 is arranged below the first wedge-shaped slider 4-2 and is in sliding connection with the first wedge-shaped slider 4-2 through the dovetail groove structure, the second upper buckle slider 47 is arranged above the second wedge-shaped slider 4-3 and is in sliding connection with the second wedge-shaped slider 4-3 through the dovetail groove structure, and the second lower buckle slider 48 is arranged below the second wedge-shaped slider 4-3 and is in sliding connection with the second wedge-shaped slider 4-3 through the dovetail groove structure.

[0035] The rear ends of the first through hole 40 and the second through hole 41 are respectively provided with rear limiting plates 4-10.

[0036] The rear end of the first wedge-shaped slider 4-2 is provided with a first limiting portion 43 matched with the first step 40-1 for limiting, and the rear end of the second wedge-shaped slider 4-3 is provided with a second limiting portion 46 matched with the second step 41-1 for limiting.

[0037] The first slider seat 4-1 is provided with a vertical through hole 42, and the middle portions of the first wedge-shaped slider 4-2 and the second wedge-shaped slider 4-3 are provided with inclined through holes 400.

[0038] The second slider assembly 5 comprises a second slider seat 5-1, a main core-pulling slider 5-2, an upper core-pulling slider 5-3, a side core-pulling slider 5-4, a main core-pulling slider 5-5, an upper core-pulling slider 5-6 and a side core-pulling slider 5-7, the second slider seat 5-1 is provided with a third through hole 50 and a fourth through hole 51, the main core-pulling slider 5-2, the upper core-pulling slider 5-3 and the side core-pulling slider 5-4 are respectively inserted into the third through hole 50 for limiting, and the main core-pulling slider 5-5, the upper core-pulling slider 5-6 and the side core-pulling slider 5-7 are respectively inserted into the fourth through hole 51 for limiting, the main core-pulling slider 5-2 and the main core-pulling slider 5-5 are provided with U-shaped grooves 500, the first wedge-shaped slider 4-2, the first upper buckle slider 44 and the first lower buckle slider 45 are embedded in the U-shaped grooves 500 on the main core-pulling slider 5-2, and the second wedge-shaped slider 4-3, the second upper buckle slider 47 and the second lower buckle slider 48 are embedded in the U-shaped grooves 500 on the main core-pulling slider 5-5.

[0039] The first installation plate 20 is provided with a first stroke switch 20-1, and the second installation plate 21 is provided with a second stroke switch 21-1.

[0040] Embodiment 1

[0041] The core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold has the following mold closing process:

[0042] Step S1: The oil cylinder 3 pushes the first sliding block assembly 4 and the second sliding block assembly 5 forward through the connecting rod 30 until the stroke control rod 23 triggers the first stroke switch 20-1, and the oil cylinder 3 stops the extension action, at this time, the main core-pulling sliding block one 5-2 is located at the first cavity 1-2 position of the automobile headrest plastic part to be injected, the upper core-pulling sliding block one 5-3 is located at the first upper cavity 1-4 position of the automobile headrest plastic part to be injected, and the side core-pulling sliding block one 5-4 is located at the first side cavity 1-3 position of the automobile headrest plastic part to be injected; the main core-pulling sliding block two 5-5 is located at the second cavity 1-6 position of the automobile headrest plastic part to be injected, the upper core-pulling sliding block two 5-6 is located at the second upper cavity 1-8 position of the automobile headrest plastic part to be injected, and the side core-pulling sliding block two 5-7 is located at the second side cavity 1-7 position of the automobile headrest plastic part to be injected.

[0043] Step S2: The shovel base 6 enters the vertical through hole 42 in the first sliding block seat 4-1 along with the mold closing process, the mold closing action is slowed down, and along with the continuous mold closing action, the shovel base 6 enters the inclined through hole 400 in the first wedge-shaped sliding block 4-2 and the second wedge-shaped sliding block 4-3, drives the first wedge-shaped sliding block 4-2 and the second wedge-shaped sliding block 4-3 to move forward, the first wedge-shaped sliding block 4-2 drives the first upper buckle sliding block 44 and the first lower buckle sliding block 45, the second wedge-shaped sliding block 4-3 drives the second upper buckle sliding block 47 and the second lower buckle sliding block 48, and the core filling action of the first plug-in buckle hole 1-5 and the second plug-in buckle hole 1-9 is realized.

[0044] Step S3: Injection cooling is performed.

[0045] The core-pulling secondary sliding block mechanism for the automobile headrest plastic part injection mold has the following mold closing process:

[0046] Step S11: with the mold opening process, the shovel base 6 is pulled out from the inclined through hole 400 in the first wedge-shaped slider 4-2 and the second wedge-shaped slider 4-3, the first wedge-shaped slider 4-2 and the second wedge-shaped slider 4-3 are driven to move backward, the first wedge-shaped slider 4-2 drives the first upper buckle slider 44 and the first lower buckle slider 45, the second wedge-shaped slider 4-3 drives the second upper buckle slider 47 and the second lower buckle slider 48, and the core pulling action of the first plug-in buckle hole 1-5 and the second plug-in buckle hole 1-9 is realized.

[0047] Step S11: the oil cylinder 3 pulls the first slider assembly 4 and the second slider assembly 5 together to move backward through the connecting rod 30 until the stroke control rod 23 triggers the second stroke switch 21-1, and the oil cylinder 3 stops the contraction action, at this time, the main core pulling slider 5-2 is pulled out from the first cavity 1-2 of the automobile headrest plastic part, the upper core pulling slider 5-3 is pulled out from the first upper cavity 1-4 of the automobile headrest plastic part, and the side core pulling slider 5-4 is pulled out from the first side cavity 1-3 of the automobile headrest plastic part; the main core pulling slider 5-5 is pulled out from the second cavity 1-6 of the automobile headrest plastic part, the upper core pulling slider 5-6 is pulled out from the second upper cavity 1-8 of the automobile headrest plastic part, and the side core pulling slider 5-7 is pulled out from the second side cavity 1-7 of the automobile headrest plastic part.

[0048] The automobile headrest plastic part injection mold core pulling secondary slider mechanism has the advantages that the first plug-in buckle hole 1-5 and the second plug-in buckle hole 1-9 are demolded through the shovel base 6 first, then the oil cylinder 3 is contracted to demold the plastic part, the continuous demolding and core pulling are realized, the demolding problem of the product is not prone to occur, the demolding efficiency and the product excellent rate are improved, and the production cost is reduced.

[0049] Embodiment 2:

[0050] The automobile headrest plastic part injection mold core pulling secondary slider mechanism drives the first wedge-shaped slider 4-2 and the second wedge-shaped slider 4-3 through the shovel base 6 in the whole mold opening large stroke, the first wedge-shaped slider 4-2 drives the first upper buckle slider 44 and the first lower buckle slider 45, the second wedge-shaped slider 4-3 drives the second upper buckle slider 47 and the second lower buckle slider 48, and then the oil cylinder is contracted to realize core pulling.

[0051] The above is an exemplary description of the utility model in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. A core-pulling secondary slide mechanism for an injection mold for a plastic part of an automotive headrest, characterized in that: The utility model relates to a kind of injection mould movable platen, including guide rail (1), connecting plate (2), oil cylinder (3), first slider assembly (4), second slider assembly (5) and spade base (6), the oil cylinder (3) cylinder body is fastened connection with connecting plate (2), first slider assembly (4) and second slider assembly (5) are slidably connected with guide rail (1), first slider assembly (4) and second slider assembly (5) are fastened connection, spade base (6) is connected with the movable platen of injection mould, and can be inserted into first slider assembly (4).

2. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 1, characterized in that: The first slider assembly (4) includes first slider seat (4-1), first wedge-shaped slider (4-2), first upper buckle slider (44), first lower buckle slider (45), second wedge-shaped slider (4-3), second upper buckle slider (47) and second lower buckle slider (48), first through hole (40), first step (40-1), second through hole (41) and second step (41-1) are provided on the first slider seat (4-1), the first wedge-shaped slider (4-2) is slidably connected with the first through hole (40), and is limited by the first step (40-1), the second wedge-shaped slider (4-3) is slidably connected with the second through hole (41), and is limited by the second step (41-1), the first upper buckle slider (44) is arranged above the first wedge-shaped slider (4-2), and is slidably connected with the first wedge-shaped slider (4-2) through dovetail groove structure, the first lower buckle slider (45) is arranged below the first wedge-shaped slider (4-2), and is slidably connected with the first wedge-shaped slider (4-2) through dovetail groove structure, the second upper buckle slider (47) is arranged above the second wedge-shaped slider (4-3), and is slidably connected with the second wedge-shaped slider (4-3) through dovetail groove structure, the second upper buckle slider (47) is arranged below the second wedge-shaped slider (4-3), and is slidably connected with the second wedge-shaped slider (4-3) through dovetail groove structure.

3. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 2, characterized in that: The rear end of the first through hole (40) and the second through hole (41) is respectively provided with rear limiting plate (4-10).

4. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 2, characterized in that: The rear end of the first wedge-shaped slider (4-2) is provided with first limiting portion (43) matched with the first step (40-1) for limiting;The rear end of the second wedge-shaped slider (4-3) is provided with second limiting portion (46) matched with the second step (41-1) for limiting.

5. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 2, characterized in that: The first slider seat (4-1) is provided with vertical through hole (42);The middle part of the first wedge-shaped slider (4-2) and the second wedge-shaped slider (4-3) is provided with inclined through hole (400).

6. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 2, characterized in that: The second slider assembly (5) comprises a second slider seat (5-1), a main core-pulling slider (5-2), an upper core-pulling slider (5-3), a side core-pulling slider (5-4), a main core-pulling slider (5-5), an upper core-pulling slider (5-6) and a side core-pulling slider (5-7), the second slider seat (5-1) is provided with a third through hole (50) and a fourth through hole (51), the main core-pulling slider (5-2), the upper core-pulling slider (5-3) and the side core-pulling slider (5-4) are respectively limitedly inserted with the third through hole (50), and the main core-pulling slider (5-5), the upper core-pulling slider (5-6) and the side core-pulling slider (5-7) are respectively limitedly inserted with the fourth through hole (51); the main core-pulling slider (5-2) and the main core-pulling slider (5-5) are provided with a U-shaped groove (500), the first wedge-shaped slider (4-2), the first upper buckle slider (44) and the first lower buckle slider (45) are embedded in the U-shaped groove (500) on the main core-pulling slider (5-2); the second wedge-shaped slider (4-3), the second upper buckle slider (47) and the second lower buckle slider (48) are embedded in the U-shaped groove (500) on the main core-pulling slider (5-5).

7. The core-pulling secondary sliding block mechanism for an injection mold of a plastic part of an automobile headrest according to claim 1, characterized in that: The connecting plate (2) is symmetrically provided with a first mounting plate (20) and a second mounting plate (21), the first mounting plate (20) is provided with a first travel switch (20-1), and the second mounting plate (21) is provided with a second travel switch (21-1); the first slider assembly (4) is provided with a support (22), and the support (22) is provided with a travel control rod (23).

Images