A car headrest mold with a deep groove pull-out structure

Abstract

The utility model provides a car headrest mold with a deep groove pull-out structure, including a fixed mold plate and a movable mold plate, a core is installed in the mold cavity of the movable mold plate; a lateral ejection mechanism, including a fixed mold cylinder fixed on the fixed mold plate and a core rod connected to the piston rod of the fixed mold cylinder, the fixed mold cylinder can drive the piston rod to act on the core rod and make the core rod extend into the molding cavity of the product; an insert pin, which is vertically installed in the fixed mold plate, and the lower end of the insert pin contacts the core rod; an inclined ejector core pulling mechanism, including an inclined ejector rod, a limit block fixed on the movable mold plate, an inclined ejector slider and an inclined ejector seat, the inclined ejector rod obliquely passes through the limit block and is hinged on the inclined ejector slider, and the inclined ejector seat is installed on the lower ejection plate. The utility model adopts an insert pin in combination with a lateral ejection mechanism to realize the molding of the special-shaped groove and the through hole on the product, and the inclined ejector rod of the inclined ejector core pulling mechanism is installed on the lower ejection plate, which increases the rotation angle of the inclined ejector rod, reduces the mold volume, and improves production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to an automobile headrest mold with a deep groove pull-out structure. Background Art

[0002] Reference Figure 1-2 , is a plastic product for a car seat headrest, which includes an arc-shaped cover 101, and the inner concave surface of the arc-shaped cover 101 is integrally formed with two plug-in parts 102, and the outer arc surface of the arc-shaped cover 101 is formed with two special-shaped grooves 103, the special-shaped grooves 103 are 74.5mm deep, and a through hole 104 is formed on the special-shaped grooves 103. During the injection molding process of the product, due to the existence of undercuts in the plug-in part 102, the undercuts interfere with the demoulding direction, and the plug-in surface of the plug-in part 102 is deep, making it difficult to demould the product; at the same time, due to the depth of the special-shaped grooves 103 and the existence of the through holes 104, the mold design is complicated, resulting in reduced production efficiency. The above technical problems are urgently needed to be solved by those skilled in the art. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides an automobile headrest mold with a deep groove pull-out structure.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A car headrest mold with a deep groove pull-out structure, comprising a fixed mold plate and a movable mold plate, a core is installed in the mold cavity of the movable mold plate, and the fixed mold plate and the movable mold plate are molded together to form a molding cavity for the product;

[0006] A lateral ejection mechanism, comprising a fixed die oil cylinder fixed on a fixed die plate and a core rod connected to a piston rod of the fixed die oil cylinder, wherein the fixed die oil cylinder is arranged upwardly and tilted toward one side of the fixed die plate, and the fixed die oil cylinder can drive the piston rod to act on the core rod and make the core rod extend into the molding cavity of the product;

[0007] An insert pin is vertically installed in the fixed template, and the lower end of the insert pin is in contact with the core rod;

[0008] The inclined ejector core pulling mechanism includes an inclined ejector rod, a limit block fixed on the movable template, an inclined ejector slider and an inclined ejector seat. The inclined ejector rod obliquely passes through the limit block and is hinged on the inclined ejector slider. The inclined ejector slider is slidably installed in the slide groove of the inclined ejector seat, and the inclined ejector seat is installed on the lower ejection plate.

[0009] In a preferred embodiment of the utility model, the lateral ejection mechanism is provided with two groups which are spaced apart and located on the same side of the fixed mold plate, and the piston rod of the fixed mold cylinder is detachably connected to the core rod through a connector.

[0010] In a preferred embodiment of the utility model, the inclined ejector core-pulling mechanism is provided with two groups which are respectively spaced apart and located in the core, and the head of the inclined ejector rod is provided as the molding surface.

[0011] In a preferred embodiment of the utility model, it also includes a plurality of ejector pins, which are vertically mounted on the upper ejector plate, and the plurality of ejector pins are evenly distributed in the core.

[0012] In a preferred embodiment of the present invention, the movement direction of the core rod is inclined relative to the X direction, and the inclination angle is 3°.

[0013] In a preferred embodiment of the utility model, a plurality of wear-resistant blocks are arranged on the butt joint surfaces of the fixed platen, the movable platen and the core.

[0014] Beneficial effects: The utility model provides a car headrest mold with a deep groove pull-out structure, which uses a needle inlay to cooperate with a lateral ejection mechanism to realize the molding of the special-shaped groove and the through hole on the product, simplifies the mold structure, and the needle inlay is fixed in the fixed mold plate. In this molding method, during the process of the core rod extending into and out of the molding cavity, the top end of the needle inlay keeps in contact with the outer surface of the core rod, thereby improving the matching accuracy between the needle inlay and the core rod and improving the injection molding effect;

[0015] The inclined ejector rod of the inclined ejector core pulling mechanism of the utility model is installed on the lower ejector plate, which increases the rotation angle of the inclined ejector rod, so that the molding surface at the upper end of the inclined ejector rod can be quickly separated from the molded product, and it can be ensured that the undercut structure of the product will not be damaged during the separation process, which can not only simplify the structure of the mold, but also reduce the volume of the mold and improve the production efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the headrest plastic product described in the background technology of this utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the headrest plastic product described in the background technology of this utility model Figure 2 ;

[0018] Figure 3 This is a structural schematic diagram of a car headrest mold with a deep groove pull-out structure described in the utility model;

[0019] Figure 4 This is a schematic diagram of the unfolded structure of a car headrest mold with a deep groove pull-out structure described in the utility model;

[0020] Figure 5 This is a cross-sectional view of the installation of the insert pin and the lateral ejection mechanism of the utility model;

[0021] Figure 6 This is a cross-sectional view of the installation of the inclined top core pulling mechanism of the utility model;

[0022] Figure 7 It is a structural schematic diagram of the inclined top core pulling mechanism of the utility model;

[0023] Figure 8 It is a partial structural schematic diagram of an automobile headrest mold with a deep groove pull-out structure described in the utility model.

[0024] In the figure: 1 fixed template;

[0025] 2 dynamic template;

[0026] 3 core;

[0027] 4 lateral ejection mechanism, 41 fixed mold oil cylinder, 42 core rod;

[0028] 5. Inlay needles;

[0029] 6 inclined ejector core pulling mechanism, 61 inclined ejector rod, 62 limit block, 63 inclined ejector slide block, 64 inclined ejector seat;

[0030] 7. Lower ejector plate;

[0031] 8. Ejector plate;

[0032] 9 thimble. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figure 3-5 As shown, the utility model provides a car headrest mold with a deep groove pull-out structure, comprising a fixed mold plate 1 and a movable mold plate 2, a core 3 is installed in the mold cavity of the movable mold plate 2, and the fixed mold plate 1 and the movable mold plate 2 are molded together to form a molding cavity for the product;

[0035] The lateral ejection mechanism 4 includes a fixed die cylinder 41 fixed on the fixed die plate 1 and a core rod 42 connected to the piston rod of the fixed die cylinder 41. The fixed die cylinder 41 is arranged upwardly and tilted toward one side of the fixed die plate 1. The fixed die cylinder 41 can drive the piston rod to act on the core rod 42 and make the core rod 42 extend into the molding cavity of the product. The core rod 42 is used to mold the special-shaped groove 103 of the product.

[0036] The insert pin 5 is vertically installed in the fixed mold plate 1, and the lower end of the insert pin 5 contacts the core rod 42, and is used for forming the through hole 104;

[0037] like Figure 6-7 As shown, the inclined ejector core pulling mechanism 6 is used for forming the plug-in part 102, which includes an inclined ejector rod 61, a limit block 62 fixed on the movable template 2, an inclined ejector slider 63 and an inclined ejector seat 64. The inclined ejector rod 61 obliquely passes through the limit block 62 and is hinged on the inclined ejector slider 63. The inclined ejector slider 63 is slidably installed in the slide groove of the inclined ejector seat 64, and the inclined ejector seat 64 is installed on the lower ejection plate 7.

[0038] The working principle and beneficial effects of the above technical solution are:

[0039] After the injection molding of the utility model is completed, the lateral ejection mechanism 4 works, and its fixed mold oil cylinder 41 drives the piston rod to act on the core rod 42 and make the core rod 42 separate from the molding cavity of the product. Then, the fixed mold plate 1 and the movable mold plate 2 are separated, and the automobile headrest is molded on the core 3. While the lower ejection plate 7 performs the ejection movement, the inclined ejector rod 61 of the inclined ejector core pulling mechanism 6 rotates around the hinge point with the inclined ejector slider 63 to separate from the molding cavity of the product.

[0040] The utility model installs the inclined ejector seat 64 on the lower ejector plate 7 to increase the rotation angle of the inclined ejector rod 61, so that the molding surface at the upper end of the inclined ejector rod 61 can be quickly separated from the molded product, and ensure that the undercut structure of the product will not be damaged during the separation process.

[0041] In one embodiment,

[0042] The lateral ejection mechanism 4 is provided with two groups which are spaced apart and located on the same side of the fixed mold plate 1, and the piston rod of the fixed mold oil cylinder 41 is detachably connected to the core rod 42 through a connector;

[0043] The working principle and beneficial effects of the above technical solution are:

[0044] The detachable connection between the piston rod and the core rod 42 facilitates the processing of the core rod 42 and simplifies the maintenance and replacement of the lateral ejection mechanism 4, thereby reducing maintenance costs.

[0045] In one embodiment, the inclined ejector core pulling mechanism 6 is provided with two groups which are spaced apart in the core 3 , and the head of the inclined ejector rod 61 is provided as a molding surface for molding the plug-in portion 102 of the product.

[0046] In one embodiment, Figure 8 As shown, it also includes a plurality of ejector pins 9 , which are vertically mounted on the upper ejector plate 8 , and the plurality of ejector pins 9 are evenly distributed in the core 3 .

[0047] In one embodiment, the movement direction of the core rod 42 is inclined relative to the X direction, and the inclination angle is 3°, which is adapted to the molding angle of the product itself.

[0048] In one embodiment, a number of wear-resistant blocks are arranged on the mating surfaces of the fixed mold plate 1, the movable mold plate 2 and the core 3; the provision of the wear-resistant blocks significantly improves the durability of the entire mold, and the replacement of the wear-resistant blocks is usually more economical than replacing the entire mold component, which can reduce the long-term maintenance cost of the mold.

[0049] In summary:

[0050] The automobile seat headrest molding mold of the utility model adopts a needle 5 to cooperate with a lateral ejection mechanism 4 to realize the molding of the special-shaped groove 103 and the through hole 104 on the product, simplifying the mold structure. The needle 5 is fixed in the fixed mold plate 1. In this molding method, during the process of the core rod 42 extending into and out of the molding cavity, the top end of the needle 5 is kept in contact with the outer surface of the core rod 42, thereby improving the matching accuracy between the needle 5 and the core rod 42 and improving the injection molding effect.

[0051] The inclined ejector rod 61 of the inclined ejector core pulling mechanism 6 is installed on the lower ejector plate 7, which increases the rotation angle of the inclined ejector rod 61, so that the molding surface at the upper end of the inclined ejector rod 61 can quickly separate from the molded product and ensure that the undercut structure of the product will not be damaged during the separation process, which can not only simplify the structure of the mold but also reduce the volume of the mold.

[0052] The above shows and describes the basic principle, main features and advantages of the utility model. The front, back, left and right used in the text are not specific, mainly for a more intuitive description of the technical solution, and do not have a limiting effect. The technical personnel in this industry should understand that the above implementation is only to illustrate the technical concept and characteristics of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it, and it cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A car headrest mold with a deep groove pull-out structure, characterized in that: It comprises a fixed die plate (1) and a movable die plate (2), a core (3) is installed in the die cavity of the movable die plate (2), and a molding cavity of a product is formed after the fixed die plate (1) and the movable die plate (2) are molded together; A lateral ejection mechanism (4) comprises a fixed die oil cylinder (41) fixed on the fixed die plate (1) and a core rod (42) connected to the piston rod of the fixed die oil cylinder (41), wherein the fixed die oil cylinder (41) is arranged to be inclined upward toward one side of the fixed die plate (1), and the fixed die oil cylinder (41) can drive the piston rod to act on the core rod (42) and make the core rod (42) extend into the molding cavity of the product; An insert pin (5) is vertically mounted in the fixed template (1), and the lower end of the insert pin (5) is in contact with the core rod (42); The inclined ejector core pulling mechanism (6) comprises an inclined ejector rod (61), a limit block (62) fixed on a movable template (2), an inclined ejector slider (63) and an inclined ejector seat (64); the inclined ejector rod (61) obliquely passes through the limit block (62) and is hinged on the inclined ejector slider (63); the inclined ejector slider (63) is slidably installed in a slide groove of the inclined ejector seat (64); and the inclined ejector seat (64) is installed on a lower ejection plate (7).

2. The automobile headrest mold with a deep groove pull-out structure according to claim 1, characterized in that: The lateral ejection mechanism (4) is provided with two groups which are spaced apart and located on the same side of the fixed mold plate (1), and the piston rod of the fixed mold oil cylinder (41) is detachably connected to the core rod (42) via a connector.

3. The automobile headrest mold with a deep groove pull-out structure according to claim 1, characterized in that: The inclined ejector core pulling mechanism (6) is provided with two groups which are spaced apart and located in the core (3), and the head of the inclined ejector rod (61) is provided as a molding surface.

4. The automobile headrest mold with a deep groove pull-out structure according to claim 1, characterized in that: It also comprises a plurality of ejector pins (9), wherein the ejector pins (9) are vertically mounted on the upper ejector plate (8), and the plurality of ejector pins (9) are evenly distributed in the core (3).

5. The automobile headrest mold with a deep groove pull-out structure according to claim 1, characterized in that: The movement direction of the core rod (42) is inclined relative to the X direction, and the inclination angle is 3°.

6. The automobile headrest mold with a deep groove pull-out structure according to claim 1, characterized in that: A plurality of wear-resistant blocks are arranged on the butt joint surfaces of the fixed die plate (1), the movable die plate (2) and the core (3).

Images