Automobile headrest cover cap mold with improved sliding block and ejection structure

Abstract

The utility model provides an automobile headrest cover cap mould with an improved sliding block and an improved ejection structure, which comprises an upper mould and a lower mould which can be opened and closed, and a lower mould core is arranged in a mould cavity of the lower mould; the lateral sliding block mechanism comprises a first wear-resistant block fixed on the lower die and a lateral sliding block horizontally sliding along the surface of the first wear-resistant block, the lateral sliding block is Z-shaped, one end, close to the forming cavity, of the lateral sliding block is provided with a forming bulge, and one end, away from the forming cavity, of the lateral sliding block is provided with an inclined hole; the ejector rod is obliquely mounted in the upper die and is arranged in the inclined hole; the pitched roof core-pulling mechanism comprises a pitched roof rod, a pitched roof guide piece and a pitched roof sliding block, the pitched roof guide piece and the pitched roof sliding block are fixed on the lower die, the pitched roof sliding block is arranged in the pitched roof seat, and the tail part of the pitched roof rod is hinged on the pitched roof sliding block. The lateral sliding block mechanism is matched with the inclined ejection core-pulling mechanism, smooth demolding of the headrest cover is completed, the production efficiency is improved, the ejection mechanism is provided with a forming face, the headrest cover is evenly stressed when ejected out, and the surface quality of a plastic part is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to an automobile headrest cover mold with an improved slider and ejection structure. Background Art

[0002] Reference Figure 1-2 , is a car headrest cover 8, which has two waist-shaped grooves 83 on one side of its arc-shaped cover body 81, and a number of plug-in parts 82 are integrally formed on the inner concave surface of the arc-shaped cover body 81. During the injection molding process of the headrest cover shell 8, the plug-in parts 82 are formed with undercuts, which interfere with the demoulding direction, and the two waist-shaped grooves 83 are formed on one side of the arc-shaped cover body 81, making it difficult to demould the headrest cover 8, resulting in low production efficiency of the headrest cover 8; and after the headrest cover 8 is injection molded, its molding surface often has defects such as deformation due to the influence of ejection pins; technical personnel in this field urgently need to solve the above technical problems. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides an automobile headrest cover mold with an improved slider and ejection structure, which has high production efficiency and good molding quality.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A mold for an automobile headrest cover with an improved slider and ejection structure, comprising an upper mold and a lower mold that can be opened and closed, a lower mold core installed in the mold cavity of the lower mold, and a molding cavity for the product formed between the upper mold and the lower mold core;

[0006] A lateral slider mechanism, comprising a first wear-resistant block fixed to the lower die and a lateral slider sliding horizontally along the surface of the first wear-resistant block. The lateral slider is Z-shaped, with a molding protrusion formed on one end of the slider close to the molding cavity and an inclined hole formed on the end of the slider facing away from the molding cavity.

[0007] a push rod, which is obliquely installed in the upper mold, and the push rod is set in the oblique hole;

[0008] The inclined ejector core pulling mechanism includes an inclined ejector rod, an inclined ejector guide fixed on the lower mold and an inclined ejector slider. The inclined ejector rod is arranged at an angle, and the inclined ejector slider is slidably installed in the inclined ejector seat. The inclined ejector seat is installed on the ejector plate, and the tail of the inclined ejector rod is hinged on the inclined ejector slider.

[0009] In a preferred embodiment of the present invention, it also includes an ejection mechanism,

[0010] It includes an ejector pin and an ejector block. The ejector pin is installed on an ejector plate. The upper end of the ejector pin is plugged with the ejector block. The ejector block is installed in the lower mold core. The upper end surface of the ejector block is the molding surface.

[0011] In a preferred embodiment of the present invention, the ejection block is plugged into the ejector pin, a limiting protrusion is formed on the upper end of the ejector pin, a limiting through groove is provided at the lower end of the ejection block, and the limiting protrusion is embedded in the limiting through groove.

[0012] In a preferred embodiment of the present invention, the lateral slider mechanism further includes: a limit block, which is L-shaped, with one end of the limit block facing the lateral slider and the other end locked to the lower mold.

[0013] In a preferred embodiment of the present invention, the end of the lateral slider close to the molding cavity has a U-shaped guide surface, and the guide surface corresponds to a matching U-shaped guide groove in the upper mold.

[0014] In a preferred embodiment of the present invention, a plurality of second wear-resistant blocks are arranged on the joint surfaces of the upper die, the lower die and the lower die core.

[0015] Beneficial effects: The utility model is a mold for an automobile headrest cover with an improved slider and ejection structure. The side slider mechanism cooperates with the inclined ejection core pulling mechanism to achieve smooth demoulding of the headrest cover, thereby improving production efficiency. At the same time, the ejection mechanism with a molding surface is provided to ensure uniform force when the headrest cover is ejected, thereby ensuring the surface quality of the plastic part.

[0016] The U-shaped guide surface of the lateral slider is tightly integrated with the U-shaped guide groove of the upper mold to ensure that the lateral slider is accurately positioned. The design of the U-shaped guide surface and guide groove can improve the matching accuracy of the mold, make the lateral slider accurately guided when moving, and reduce the friction damage between the two, thus improving the molding quality of the plastic part. The movement is reliable, simple and practical.

[0017] The ejector plate drives the inclined ejector core-pulling mechanism and the ejector mechanism to move, and the ejector drives the ejector block to move slowly upward. At this time, the inclined ejector rod rotates along the hinge point with the inclined ejector slider and separates from the molded product. The ejector block ejects the molded product outward in the vertical direction, completing the demoulding of the headrest cover. The ejector block with a molding surface is used to realize the demoulding of the molded product, ensuring the molding quality of the plastic part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the headrest cover described in the background technology of this utility model Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the headrest cover described in the background technology of this utility model Figure 2 ;

[0020] Figure 3 This is an expanded three-dimensional view of a car headrest cover mold with an improved slider and ejection structure provided by the utility model;

[0021] Figure 4 For the utility model Figure 3 A local enlarged view of point A;

[0022] Figure 5 This is a schematic structural diagram of the lateral slider of the present invention;

[0023] Figure 6 This is a partial structural diagram of a car headrest cover mold with an improved slider and ejection structure provided by the utility model;

[0024] Figure 7 This is a schematic diagram of the installation structure of the inclined top core pulling mechanism of the utility model;

[0025] Figure 8 This is a schematic structural diagram of the inclined top core pulling mechanism of the utility model;

[0026] Figure 9 This is a schematic diagram of the installation structure of the ejection mechanism of the utility model;

[0027] Figure 10 It is a structural schematic diagram of the ejection mechanism of the present invention.

[0028] In the figure: 1 upper die;

[0029] 2. Lower die;

[0030] 3. Lower mold core;

[0031] 4 lateral slider mechanism, 41 first wear-resistant block, 42 lateral slider, 421 forming protrusion, 422 inclined hole, 423 guide surface, 43 push rod, 44 limit block;

[0032] 5 inclined ejector core pulling mechanism, 51 inclined ejector rod, 52 inclined ejector guide, 53 inclined ejector slide, 54 inclined ejector seat;

[0033] 6thimble plate;

[0034] 7 ejection mechanism, 71 ejector pin, 72 ejection block;

[0035] 8 headrest cover, 81 arc-shaped cover body, 82 plug-in portion, 83 waist-shaped groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0037] like Figure 3-5 As shown, the present invention provides an automobile headrest cover mold with an improved slider and ejection structure, comprising an upper mold 1 and a lower mold 2 that can be opened and closed, a lower mold core 3 is installed in the mold cavity of the lower mold 2, and a molding cavity of the product is formed between the upper mold 1 and the lower mold core 3;

[0038] The lateral slider mechanism 4 includes a first wear-resistant block 41 fixed to the lower mold 2 and a lateral slider 42 that slides horizontally along the surface of the first wear-resistant block 41. The lateral slider 42 is Z-shaped, and a molding protrusion 421 with a waist-shaped groove 83 is formed on the end of the lateral slider 42 close to the molding cavity. An oblique hole 422 is provided on the end of the lateral slider 42 away from the molding cavity.

[0039] A push rod 43 is installed obliquely in the upper mold 1, and the push rod 43 is set in the inclined hole 422;

[0040] like Figure 6-8 As shown, the inclined ejector core pulling mechanism 5 includes an inclined ejector rod 51, an inclined ejector guide 52 fixed to the lower mold 2, and an inclined ejector slider 53. The inclined ejector rod 51 is tilted, and its head is formed with a molding structure of an inserting portion 82. The inclined ejector slider 53 is slidably installed in the inclined ejector seat 54. The tail of the inclined ejector rod 51 is hinged to the inclined ejector slider 53.

[0041] The working principle and beneficial effects of the above technical solution are:

[0042] After the injection molding of the present invention is completed, the upper mold 1 is separated from the lower mold 2, and the headrest cover 8 is formed on the lower mold core 3. The working process of the lateral slider mechanism 4 is as follows: the ejector rod 43 on the upper mold 1 slowly pushes the lateral slider 42 away from the molding cavity, so that the lateral slider 42 is separated from the molded product in the horizontal direction;

[0043] The working process of the inclined ejector core pulling mechanism 5 is as follows: the inclined ejector seat 54 is installed on the ejector plate 6. When the ejector plate 6 performs the ejection movement, it drives the inclined ejector rod 51 to rotate along the hinge point with the inclined ejector slider 53 and separate from the molded product.

[0044] In one embodiment, Figure 9-10 As shown, it also includes an ejection mechanism 7,

[0045] It includes an ejector pin 71 and an ejector block 72. The ejector pin 71 is mounted on the ejector plate 6. The upper end of the ejector pin 71 is plugged with the ejector block 72. The ejector block 72 is mounted in the lower mold core 3. The upper end surface of the ejector block 72 is the molding surface.

[0046] The working principle and beneficial effects of the above technical solution are:

[0047] The ejection mechanisms 7 of the present invention are evenly distributed in multiple numbers along the inner cavity of the molded product. Since the molding surface of the headrest cover is large and it is a thin-walled part, if the general ejection pin method is adopted, it is bound to cause defects such as ejection deformation; the upper end surface of the ejection block 72 is the inner molding surface of the headrest cover, and the ejector plate 6 drives the inclined ejection core-pulling mechanism 5 to rotate and separate from the molded product, while the ejector pin 71 drives the ejection block 72 to move slowly upward, and the ejection block 72 ejects the molded product outward in the vertical direction; a limiting protrusion is formed on the upper end of the ejector pin 71, and a limiting through groove is provided at the lower end of the ejector block 72. The above-mentioned limiting protrusion is embedded in the limiting through groove, realizing the plug-in connection mode of the ejector pin 71 and the ejection block 72, which is convenient for installation. At the same time, the design of the ejector block 72 is also conducive to mold exhaust.

[0048] In one embodiment, the lateral slider mechanism 4 further includes:

[0049] The limit block 44 is L-shaped, with one end of the limit block 44 facing the lateral slider 42 and the other end locked on the lower mold 2.

[0050] The working principle and beneficial effects of the above technical solution are:

[0051] The setting of the limit block 44 effectively prevents the lateral slider 42 from separating from the lower mold 2 and has a certain limiting protection effect on the lateral slider 42.

[0052] In one embodiment, the end of the lateral slider 42 close to the molding cavity has a U-shaped guide surface 423, and the guide surface 423 corresponds to the matching U-shaped guide groove in the upper mold 1;

[0053] The working principle and beneficial effects of the above technical solution are:

[0054] During the molding process, when the mold is closed, the U-shaped guide surface 423 of the lateral slider 42 is tightly combined with the U-shaped guide groove of the upper mold 1 to ensure that the lateral slider 42 is accurately positioned; the design of the U-shaped guide surface and guide groove can improve the accuracy of the mold and reduce errors in the molding process.

[0055] In one embodiment, a plurality of second wear-resistant blocks are arranged on the butting surfaces of the upper die 1, the lower die 2 and the lower die core 3;

[0056] The working principle and beneficial effects of the above technical solution are:

[0057] The setting of the second wear-resistant block significantly improves the durability of the entire mold. The wear-resistant block is usually made of high-hardness material to resist wear and impact during mold closing. Replacing the wear-resistant block is usually more economical than replacing the entire mold component, so long-term maintenance costs can be reduced.

[0058] In summary:

[0059] When the upper mold 1 and the lower mold 2 of the present invention are demoulded and separated, the lateral slider 42 is pushed to slide horizontally by the push rod 43 fixed to the upper mold 1, so that the lateral slider 42 is separated from the molded product in the horizontal direction, and the headrest cover 8 is formed on the lower mold core 3;

[0060] The U-shaped guide surface 423 of the lateral slider 42 is tightly coupled with the U-shaped guide groove of the upper mold 1 to ensure that the lateral slider 42 is accurately positioned. The design of the U-shaped guide surface and guide groove can improve the matching accuracy of the mold, ensure accurate guidance of the lateral slider 42 during movement, and reduce friction damage between the two, thereby improving the molding quality of the plastic part.

[0061] The ejector plate 6 drives the inclined ejector core-pulling mechanism 5 and the ejector mechanism 7 to move, and the ejector pin 71 drives the ejector block 72 to move slowly upward. At this time, the inclined ejector rod 51 rotates along the hinge point with the inclined ejector slider 53 and separates from the molded product. The ejector block 72 ejects the molded product outward in the vertical direction, completing the demoulding of the headrest cover 8; the ejector block 72 with a molding surface is used to realize the demoulding of the molded product, so that the molded product is subjected to uniform force during ejection, thereby ensuring the molding quality of the plastic part.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. The terms "front", "back", "left" and "right" used in the text are not specific and are mainly used to more intuitively illustrate the technical solution and do not have a limiting effect. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A car headrest cover mold with an improved slider and ejection structure, characterized in that: It comprises an upper die (1) and a lower die (2) that can be opened and closed, a lower die core (3) is installed in the die cavity of the lower die (2), and a molding cavity for the product is formed between the upper die (1) and the lower die core (3); A lateral slider mechanism (4) includes a first wear-resistant block (41) fixed on the lower mold (2) and a lateral slider (42) sliding horizontally along the surface of the first wear-resistant block (41), wherein the lateral slider (42) is in a "Z" shape, and a molding protrusion (421) is formed at one end of the lateral slider (42) close to the molding cavity, and an oblique hole (422) is provided at one end of the lateral slider (42) away from the molding cavity; a push rod (43) which is obliquely installed in the upper mold (1), and the push rod (43) is arranged in the oblique hole (422); The inclined ejector core pulling mechanism (5) comprises an inclined ejector rod (51), an inclined ejector guide (52) fixed on the lower mold (2), and an inclined ejector slider (53). The inclined ejector rod (51) is tilted, and the inclined ejector slider (53) is slidably installed in an inclined ejector seat (54). The inclined ejector seat (54) is installed on the ejector plate (6). The tail of the inclined ejector rod (51) is hinged on the inclined ejector slider (53).

2. The automobile headrest cover mold with improved slider and ejection structure according to claim 1, characterized in that: It also includes an ejection mechanism (7), It comprises an ejector pin (71) and an ejector block (72), wherein the ejector pin (71) is mounted on an ejector plate (6), the upper end of the ejector pin (71) is plugged with the ejector block (72), the ejector block (72) is mounted in a lower mold core (3), and the upper end surface of the ejector block (72) is a molding surface.

3. The automobile headrest cover mold with improved slider and ejection structure according to claim 2, characterized in that: The ejection block (72) is plugged into the ejector pin (71), a limiting protrusion is formed on the upper end of the ejector pin (71), a limiting through slot is provided on the lower end of the ejection block (72), and the limiting protrusion is embedded in the limiting through slot.

4. The automobile headrest cover mold with improved slider and ejection structure according to claim 1, characterized in that: The lateral slider mechanism (4) further includes: a limit block (44), the limit block (44) is L-shaped, one end of the limit block (44) is arranged facing the lateral slider (42), and the other end is locked on the lower mold (2).

5. The automobile headrest cover mold with improved slider and ejection structure according to claim 1, characterized in that: The lateral slider (42) has a U-shaped guide surface (423) at one end close to the molding cavity, and the guide surface (423) corresponds to a matching U-shaped guide groove in the upper mold (1).

6. The automobile headrest cover mold with improved slider and ejection structure according to claim 1, characterized in that: A plurality of second wear-resistant blocks are arranged on the butting surfaces of the upper die (1), the lower die (2) and the lower die core (3).

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