Automobile interior trim part, injection mold and production process

Abstract

The invention relates to the technical field of production of automotive upholstery, and discloses an automotive upholstery, an injection mold and a production technology.The automotive upholstery comprises a mold frame, and a mold cavity used for injection molding is formed in the mold frame; the mold part comprises a first mold part and a second mold part; a deburring mechanism, a demolding mechanism and a limiting and clamping mechanism are arranged on the first mold part and the second mold part; by arranging the deburring mechanism, after injection molding of the automotive upholstery is completed, a rotating shaft rotates to drive a gear to rotate to drive a scraper part to move, meanwhile, a connecting rope is wound through a winding disc, in the process, a baffle can be pulled up so that the scraper part can slide to one side of a mounting cavity to make contact with the inner wall of the automotive upholstery, and then a second mold part is taken down; afterwards, the grinding piece extends to the outer side of the movable groove and is located at the top of the automobile interior trim part, the grinding piece and the scraper piece can remove burrs on the side wall and the inner wall of the automobile interior trim part in the process of taking out the automobile interior trim part, the subsequent deburring machining time is greatly shortened, and the production efficiency is greatly improved while time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile interior decoration production, in particular to an automobile interior decoration part, an injection mold and a production process. Background Art

[0002] Car interior mainly refers to the car products used for car interior modification, involving all aspects of the car interior, and some car interior parts need to use injection molds for injection molding during processing. Injection molds are divided into two types according to the molding characteristics: thermosetting plastic molds, car molds, and thermoplastic plastic molds; according to the molding process, they are divided into transfer molds, blow molds, casting molds, thermoforming molds, hot pressing molds (compression molds), injection molds, etc.

[0003] Existing automotive interior parts are very easy to get stuck in the injection mold after being molded in the injection mold, making it inconvenient to remove the automotive interior parts. In addition, there will be certain burrs on the surface and inner wall of the automotive interior parts after injection molding, which requires subsequent manual grinding and deburring, which is time-consuming and labor-intensive, affecting production efficiency. Summary of the invention

[0004] The object of the present invention is to provide an automotive interior decoration part, an injection mold and a production process to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An injection mold for automobile interior decoration parts, comprising:

[0007] A mold frame, wherein a mold cavity for injection molding is provided inside the mold frame;

[0008] A mold part, wherein the mold part comprises a first mold part and a second mold part, wherein the first mold part is installed inside the mold cavity, the second mold part is installed on the top of the mold frame, an injection port is installed on the top of the second mold part, and a certain gap is left between the second mold part and the first mold part;

[0009] A deburring mechanism, the deburring mechanism is arranged inside the mold cavity and the first mold part, and the deburring mechanism deburrs the side wall and the inner wall of the molded automobile interior decoration part through a grinding part and a scraper part;

[0010] A demoulding mechanism, wherein the demoulding mechanism is arranged inside the mold frame, and the demoulding mechanism can assist in demoulding, making it more convenient to demould the automotive interior trim after molding;

[0011] A position limiting clamping mechanism is arranged on the top of the mold frame, and the second mold part is clamped and fixed on the top of the mold frame through the position limiting clamping mechanism.

[0012] Optionally, the deburring mechanism includes a sliding frame, a baffle, a guide wheel, a connecting rope, a rotating shaft, a winding disk and a gear, a movable groove is provided on the inner wall of the mold cavity near the top, the sliding frame is slidably connected to the inside of the movable groove by a first spring, the grinding member is fixedly installed at one end of the sliding frame, an installation cavity is provided on the inside of the first mold member near the top, the baffle is rotatably connected to the inner wall of the installation cavity by a torsion spring, a matching groove is provided on the top of the installation cavity, the guide wheel is rotatably connected to the inside of the matching groove, the rotating shaft is rotatably connected to the inner wall of the installation cavity, the winding disk is fixedly installed on the side wall of the rotating shaft, one end of the connecting rope is fixedly installed on one side of the baffle, the other end of the connecting rope is fixedly installed on the side wall of the winding disk, the middle section of the connecting rope is located at the top of the guide wheel, the gear is fixedly installed on the side wall of the rotating shaft, and the scraper member is slidably connected to the inner wall of the installation cavity.

[0013] Optionally, a driving motor is fixedly mounted on the inner wall of the mounting cavity, and the rotating shaft is fixedly mounted on the output end of the driving motor.

[0014] Optionally, a gear groove is provided on the top of the scraper member, and the gear groove fits with the gear.

[0015] Optionally, a plurality of protruding parts are fixedly mounted on the side wall of the grinding piece close to the top.

[0016] Optionally, the demoulding mechanism includes a servo motor and a threaded rod, the servo motor is fixedly mounted on the inner wall of the mold frame, the threaded rod is fixedly mounted on the output end of the servo motor, and a threaded groove matching the threaded rod is formed at the bottom of the first mold member.

[0017] Optionally, a limit rod is fixedly installed on the inner wall of the mold frame, the first mold piece is slidably connected to the side wall of the limit rod, a slider is fixedly installed on the side wall of the first mold piece, a slide rail is fixedly installed on the inner wall of the mold frame, and the slider is slidably connected inside the slide rail.

[0018] Optionally, the limiting clamping mechanism includes a positioning column and a limiting block, the positioning column is fixedly mounted on the top of the mold frame, a movable cavity is provided on the side wall of the positioning column, the limiting block is movably connected to the inside of the movable cavity through a second spring, and a positioning hole matching the positioning column is provided inside the second mold member.

[0019] An automobile interior decoration part comprises an interior decoration part body, wherein the interior decoration part body is formed in the mold cavity of the automobile interior decoration part injection mold in claims 1-8, and the interior decoration part body consists of a base layer, a buffer layer, a support layer and a wear-resistant layer.

[0020] A production process of an automobile interior decoration part using an automobile interior decoration part injection mold specifically comprises the following steps:

[0021] S1: When in use, align the positioning hole inside the second mold part with the positioning column. When the second mold part is installed on the top of the mold frame, the position of the second mold part can be positioned and limited by the positioning hole and the positioning column. By using a second spring to install a limit block inside the positioning column, the limit block of the second mold part will be located at the top of the second mold part after installation, and the second mold part is clamped and fixed;

[0022] S2: Then, a liquid polymer plastic is injected into the mold cavity through the injection port to form a base layer of the interior decoration part body in the mold cavity. After the liquid polymer plastic is cooled and formed, liquid ABS plastic is injected into the mold cavity to form a buffer layer of the interior decoration part body. The above steps are repeated to inject liquid polymer polyethylene and polyketimine in turn to form a support layer and a wear-resistant layer. After cooling, the injection molding process of the interior decoration part body is completed.

[0023] S3: After the injection molding of the automobile interior parts is completed, the rotation of the shaft drives the gear to rotate and drive the scraper part to move, and at the same time the connecting rope is wound up by the winding disk. During this process, the baffle will be pulled up so that the scraper part can slide to one side of the installation cavity and contact the inner wall of the automobile interior parts, and then the second mold part will be removed. After that, the grinding part will extend to the outside of the movable groove and be located on the top of the automobile interior parts. The servo motor can control the rotation of the threaded rod to make the first mold part slide upward to push the automobile interior parts formed inside the cavity out of the cavity. In the process of taking out the automobile interior parts, the grinding part will grind the side walls of the automobile interior parts, and the scraper part can scrape off the burrs on the inner wall of the automobile interior parts, thereby removing the burrs on the side walls and inner walls of the automobile interior parts.

[0024] The present invention has at least the following beneficial effects:

[0025] (1) This solution sets a deburring mechanism. When the injection molding of the automobile interior parts is completed, the rotating shaft rotates to drive the gear to rotate and drive the scraper to move. At the same time, the connecting rope is wound up by the winding disk. During this process, the baffle will be pulled up so that the scraper can slide to one side of the installation cavity and contact the inner wall of the automobile interior parts. Then the second mold part is removed. After that, the grinding part will extend to the outside of the movable groove and be located at the top of the automobile interior parts. In the process of removing the automobile interior parts, the grinding part will grind the side wall of the automobile interior parts. The scraper can scrape off the burrs on the inner wall of the automobile interior parts, thereby removing the burrs on the side wall and inner wall of the automobile interior parts. The beating reduces the subsequent deburring processing time, saves time and labor, and greatly improves production efficiency.

[0026] (2) This solution provides a demoulding mechanism, and the servo motor can control the rotation of the threaded rod, and the rotation of the threaded rod can drive the first mold part to slide inside the mold frame. After the automobile interior decoration part is formed, the first mold part can slide upward to push the automobile interior decoration part formed inside the mold cavity out of the mold cavity, making demoulding more convenient;

[0027] (3) In this solution, a limit clamping mechanism is provided, and the position of the second mold part can be positioned and limited by the positioning hole and the positioning column. A second spring is used to install a limit block inside the positioning column so that the limit block of the second mold part will be located at the top of the second mold part after installation, thereby clamping and fixing the second mold part;

[0028] (4) This solution can achieve a better grinding effect on the grinding part and make the deburring process more thorough by providing the protruding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a schematic diagram of the structure of the injection mold for the automotive interior decoration of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the mold part of the present invention;

[0032] Figure 3 It is a schematic cross-sectional structural diagram of the second mold member and the positioning column of the present invention;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0034] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0035] Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0036] Figure 7 This is a schematic diagram of the structure of the interior decoration part body of the present invention;

[0037] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the interior decoration part body of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1. Mold frame; 101. Slide rail; 102. Limit rod; 103. Mold cavity; 2. Servo motor; 201. Threaded rod; 3. First mold part; 301. Second mold part; 302. Injection port; 303. Slider; 304. Threaded groove; 4. Positioning column; 401. Positioning hole; 402. Active cavity; 403. Limit block; 5. Active groove; 501. Sliding frame; 503. Grinding part; 504. Protruding part; 505. Installation cavity; 506. Baffle; 507. Matching groove; 508. Guide wheel; 509. Connecting rope; 510. Rotating shaft; 511. Winding reel; 512. Gear; 513. Scraper; 6. Interior decoration part body; 601. Base layer; 602. Buffer layer; 603. Support layer; 604. Wear-resistant layer. DETAILED DESCRIPTION

[0040] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 8 The present invention provides an automotive interior decoration part, an injection mold and a production process, including:

[0042] A mold frame 1, wherein a mold cavity 103 for injection molding is provided inside the mold frame 1;

[0043] The mold part includes a first mold part 3 and a second mold part 301. The first mold part 3 is installed inside the mold cavity 103, and the second mold part 301 is installed on the top of the mold frame 1. An injection port 302 is installed on the top of the second mold part 301. A certain gap is left between the second mold part 301 and the first mold part 3;

[0044] A deburring mechanism, which is disposed inside the mold cavity 103 and the first mold part 3, and performs deburring processing on the side wall and inner wall of the molded automobile interior trim part through a grinding part 503 and a scraper part 513;

[0045] The demoulding mechanism is arranged inside the mold frame 1, and the demoulding mechanism can assist in demoulding, making it more convenient to demould the automobile interior decoration parts after molding;

[0046] The position-limiting clamping mechanism is arranged on the top of the mold frame 1 , and the second mold component 301 is clamped and fixed on the top of the mold frame 1 through the position-limiting clamping mechanism.

[0047] In some embodiments, see Figure 4 , Figure 5 , Figure 6The deburring mechanism includes a sliding frame 501, a baffle 506, a guide wheel 508, a connecting rope 509, a rotating shaft 510, a winding disk 511 and a gear 512. A movable groove 5 is provided on the inner wall of the mold cavity 103 near the top. The sliding frame 501 is slidably connected inside the movable groove 5 through a first spring. The grinding piece 503 is fixedly installed at one end of the sliding frame 501. An installation cavity 505 is provided on the inner side of the first mold part 3 near the top. The baffle 506 is rotatably connected to the inner wall of the installation cavity 505 through a torsion spring. A matching groove 507 is provided on the top of the installation cavity 505. The guide wheel 508 is rotatably connected to the inner wall of the installation cavity 505. The inside of the matching groove 507, the rotating shaft 510 is rotatably connected to the inner wall of the installation cavity 505, the winding disk 511 is fixedly installed on the side wall of the rotating shaft 510, one end of the connecting rope 509 is fixedly installed on one side of the baffle 506, and the other end of the connecting rope 509 is fixedly installed on the side wall of the winding disk 511. The middle section of the connecting rope 509 is located at the top of the guide wheel 508, the gear 512 is fixedly installed on the side wall of the rotating shaft 510, and the scraper member 513 is slidably connected to the inner wall of the installation cavity 505. By opening the movable groove 5 on the inner wall of the mold cavity 103 near the top side, the second mold member 301 is inserted into the mold cavity 103 after the second mold member 301 is inserted into the mold cavity 103. The bottom of the tool 301 will block one side of the movable groove 5, so as to prevent the material from flowing into the movable groove 5 during the injection molding process. When the second mold 301 is installed, the grinding piece 503 will be pushed into the movable groove 5. The baffle 506 can prevent the material from flowing into the installation cavity 505 during the injection molding process. The first spring can push the sliding frame 501 for support, so that the sliding frame 501 can be pushed to one side. When the injection molding of the automobile interior decoration is completed, the rotating shaft 510 rotates to drive the gear 512 to rotate and drive the scraper 513 to move, and at the same time, the connecting rope 509 is wound through the winding disk 511. The mold 501 is wound up, during which the baffle 506 is pulled up so that the scraper 513 can slide to one side of the mounting cavity 505 and contact the inner wall of the automobile interior component. The second mold component 301 is then removed, and the grinding component 503 is extended to the outside of the movable groove 5 and is located on the top of the automobile interior component. In the process of taking out the automobile interior component, the grinding component 503 will grind the side wall of the automobile interior component, and the scraper 513 can scrape off the burrs on the inner wall of the automobile interior component, thereby removing the burrs on the side wall and inner wall of the automobile interior component, and reducing the subsequent deburring processing time, saving time and effort while greatly enhancing production efficiency.

[0048] In some embodiments, see Figure 5 , Figure 6A driving motor is fixedly installed on the inner wall of the installation cavity 505, and the rotating shaft 510 is fixedly installed at the output end of the driving motor. A gear groove is opened on the top of the scraper member 513, and the gear groove is matched with the gear 512. The driving motor can be installed at any position of the installation cavity 505. The driving motor can be used to control the rotation of the rotating shaft 510. By opening a gear groove on the top of the scraper member 513, the gear 512 can drive the scraper member 513 to slide when it rotates. The sliding of the scraper member 513 can be controlled by controlling the rotation of the rotating shaft 510.

[0049] In some embodiments, see Figure 5 A plurality of protruding pieces 504 are fixedly mounted on the side wall of the grinding piece 503 near the top. The protruding pieces 504 can provide a better grinding effect for the grinding piece 503 and make the deburring process more thorough.

[0050] In some embodiments, see Figure 1 , Figure 4 The demoulding mechanism includes a servo motor 2 and a threaded rod 201. The servo motor 2 is fixedly mounted on the inner wall of the mold frame 1. The threaded rod 201 is fixedly mounted on the output end of the servo motor 2. A threaded groove 304 that matches the threaded rod 201 is provided at the bottom of the first mold member 3. A limit rod 102 is fixedly mounted on the inner wall of the mold frame 1. The first mold member 3 is slidably connected to the side wall of the limit rod 102. A slider 303 is fixedly mounted on the side wall of the first mold member 3. A slide rail 101 is fixedly mounted on the inner wall of the mold frame 1. The slider 303 is slidably connected to the inside of the slide rail 101. The sliding direction of the first mold member 3 can be limited by arranging the slider 303, the slide rail 101 and the limit rod 102. The threaded rod 201 can be controlled to rotate by arranging the servo motor 2. The first mold member 3 can be driven to slide inside the mold frame 1 by rotating the threaded rod 201. After the automobile interior decoration part is formed, the automobile interior decoration part formed inside the cavity 103 can be pushed out of the cavity 103 by sliding the first mold member 3 upward, so that demoulding is more convenient.

[0051] In some embodiments, see Figure 2 , Figure 3 The limiting clamping mechanism includes a positioning column 4 and a limiting block 403. The positioning column 4 is fixedly installed on the top of the mold frame 1. A movable cavity 402 is opened on the side wall of the positioning column 4. The limiting block 403 is movably connected to the inside of the movable cavity 402 through a second spring. A positioning hole 401 matching the positioning column 4 is opened inside the second mold member 301. By opening the positioning hole 401 inside the second mold member 301, when the second mold member 301 is installed to the top of the mold frame 1, the position of the second mold member 301 can be positioned and limited by the positioning hole 401 and the positioning column 4. By using the second spring to install the limiting block 403 inside the positioning column 4, the limiting block 403 of the second mold member 301 will be located at the top of the second mold member 301 after installation, so that the second mold member 301 is clamped and fixed.

[0052] In some embodiments, see Figure 7 , Figure 8 A car interior decoration part includes an interior decoration part body 6, which is formed in a mold cavity 103 of a car interior decoration part injection mold. The interior decoration part body 6 is composed of a base layer 601, a buffer layer 602, a support layer 603 and a wear-resistant layer 604. The base layer 601 is made of polymer plastic, so that the molded interior decoration part body 6 is made of a polymer composite material reinforced with thermoplastic long fibers, and has the characteristics of light weight, wear resistance, corrosion resistance, high strength, etc. The buffer layer 602 is made of ABS plastic, so that the overall toughness of the interior decoration part body 6 is strong. The support layer 603 is made of polymer polyethylene, so that the interior decoration part body 6 has a good supporting effect. The wear-resistant layer 604 is made of polyketimide, so that the surface of the interior decoration part body 6 has excellent wear resistance.

[0053] The working process and principle of the present invention are as follows: when in use, the positioning hole 401 inside the second mold part 301 is aligned with the positioning column 4. When the second mold part 301 is installed on the top of the mold frame 1, the position of the second mold part 301 can be positioned and limited by the positioning hole 401 and the positioning column 4. By using a second spring to install the limit block 403 inside the positioning column 4, the limit block 403 of the second mold part 301 will be located on the top of the second mold part 301 after installation, and the second mold part 301 is clamped and fixed. Then, liquid polymer plastic is injected into the mold cavity 103 through the injection port 302 to form a base layer 601 of the interior decoration part body 6 inside the mold cavity 103. After the liquid polymer plastic is cooled and formed, liquid ABS plastic is injected to form a buffer layer 602 of the interior decoration part body 6 inside the mold cavity 103. The above steps are repeated to sequentially inject liquid polymer polyethylene and polyketimine to form a support layer 603 and a wear-resistant layer 604. After that, the injection molding of the interior decoration body 6 is completed. When the injection molding of the automobile interior decoration is completed, the rotating shaft 510 rotates to drive the gear 512 to rotate and drive the scraper member 513 to move, and at the same time, the connecting rope 509 is wound up by the winding disk 511. In this process, the baffle 506 will be pulled up so that the scraper member 513 can slide to one side of the installation cavity 505 and contact the inner wall of the automobile interior decoration, and then the second mold member 301 is removed. After that, the grinding member 503 will extend to the outside of the movable groove 5 and be located at the top of the automobile interior decoration. The servo motor 2 can control the threaded rod 201 to rotate, so that the first mold member 3 slides upward to push the automobile interior decoration formed in the cavity 103 out of the cavity 103. In the process of taking out the automobile interior decoration, the grinding member 503 will grind the side wall of the automobile interior decoration, and the scraper member 513 can scrape off the burrs on the inner wall of the automobile interior decoration, thereby removing the burrs on the side wall and inner wall of the automobile interior decoration. Beating reduces the subsequent deburring processing time, saves time and effort, and greatly enhances production efficiency.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for automotive interior parts, characterized in that: include: A mold frame (1), wherein a mold cavity (103) for injection molding is provided inside the mold frame (1); A mold part, the mold part comprising a first mold part (3) and a second mold part (301), the first mold part (3) being mounted inside the mold cavity (103), the second mold part (301) being mounted on the top of the mold frame (1), an injection port (302) being mounted on the top of the second mold part (301), and a certain gap being left between the second mold part (301) and the first mold part (3); A deburring mechanism, the deburring mechanism being arranged inside the mold cavity (103) and the first mold part (3), the deburring mechanism performing deburring processing on the side wall and the inner wall of the molded automobile interior decoration part through a grinding part (503) and a scraper part (513); A demoulding mechanism, wherein the demoulding mechanism is arranged inside the mold frame (1), and the demoulding mechanism can assist in demoulding, making it more convenient to demould the automobile interior trim after molding; A position-limiting clamping mechanism, wherein the position-limiting clamping mechanism is arranged on the top of the mold frame (1), and the second mold component (301) is clamped and fixed on the top of the mold frame (1) through the position-limiting clamping mechanism.

2. The automotive interior parts injection mold according to claim 1, characterized in that: The deburring mechanism comprises a sliding frame (501), a baffle (506), a guide wheel (508), a connecting rope (509), a rotating shaft (510), a winding disk (511) and a gear (512); a movable groove (5) is provided on the inner wall of the mold cavity (103) near the top; the sliding frame (501) is slidably connected to the inside of the movable groove (5) through a first spring; the grinding member (503) is fixedly installed at one end of the sliding frame (501); a mounting cavity (505) is provided on the inner wall of the first mold member (3) near the top; the baffle (506) is rotatably connected to the inner wall of the mounting cavity (505) through a torsion spring; the top of the mounting cavity (505) is provided with a movable groove (5); A matching groove (507) is provided, the guide wheel (508) is rotatably connected inside the matching groove (507), the rotating shaft (510) is rotatably connected to the inner wall of the installation cavity (505), the winding disk (511) is fixedly installed on the side wall of the rotating shaft (510), one end of the connecting rope (509) is fixedly installed on one side of the baffle (506), and the other end of the connecting rope (509) is fixedly installed on the side wall of the winding disk (511), the middle section of the connecting rope (509) is located at the top of the guide wheel (508), the gear (512) is fixedly installed on the side wall of the rotating shaft (510), and the scraper member (513) is slidably connected to the inner wall of the installation cavity (505).

3. The automotive interior parts injection mold according to claim 2, characterized in that: A driving motor is fixedly mounted on the inner wall of the mounting cavity (505), and the rotating shaft (510) is fixedly mounted on the output end of the driving motor.

4. The automotive interior parts injection mold according to claim 2, characterized in that: The scraper member (513) has a gear groove at the top, and the gear groove fits with the gear (512).

5. The automotive interior parts injection mold according to claim 2, characterized in that: A plurality of protruding parts (504) are fixedly mounted on a side wall of the grinding part (503) close to the top.

6. The automotive interior parts injection mold according to claim 1, characterized in that: The demoulding mechanism comprises a servo motor (2) and a threaded rod (201); the servo motor (2) is fixedly mounted on the inner wall of the mold frame (1); the threaded rod (201) is fixedly mounted on the output end of the servo motor (2); and a threaded groove (304) matching the threaded rod (201) is provided at the bottom of the first mold part (3).

7. The automotive interior parts injection mold according to claim 6, characterized in that: A limit rod (102) is fixedly mounted on the inner wall of the mold frame (1); the first mold component (3) is slidably connected to the side wall of the limit rod (102); a slider (303) is fixedly mounted on the side wall of the first mold component (3); a slide rail (101) is fixedly mounted on the inner wall of the mold frame (1); and the slider (303) is slidably connected to the inside of the slide rail (101).

8. The automotive interior parts injection mold according to claim 1, characterized in that: The position-limiting clamping mechanism comprises a positioning column (4) and a position-limiting block (403); the positioning column (4) is fixedly mounted on the top of the mold frame (1); a movable cavity (402) is provided on the side wall of the positioning column (4); the position-limiting block (403) is movably connected to the inside of the movable cavity (402) via a second spring; and a positioning hole (401) matching the positioning column (4) is provided inside the second mold part (301).

9. An automotive interior decoration part, characterized in that: The invention comprises an interior decoration part body (6), wherein the interior decoration part body (6) is formed in a mold cavity (103) of an automobile interior decoration part injection mold in claims 1-8, and the interior decoration part body (6) is composed of a base layer (601), a buffer layer (602), a support layer (603) and a wear-resistant layer (604).

10. The process for producing automobile interior decoration parts by using an injection mold for automobile interior decoration parts according to any one of claims 1 to 9, characterized in that: The specific steps include: S1: When in use, the positioning hole (401) inside the second mold part (301) is aligned with the positioning column (4). When the second mold part (301) is installed on the top of the mold frame (1), the position of the second mold part (301) can be positioned and limited by the positioning hole (401) and the positioning column (4). By using a second spring to install a limiting block (403) inside the positioning column (4), the limiting block (403) of the second mold part (301) will be located at the top of the second mold part (301) after installation, so that the second mold part (301) is clamped and fixed; S2: Then, a liquid polymer plastic is injected into the mold cavity (103) through the injection port (302) to form a base layer (601) of the interior decoration part body (6) in the mold cavity (103); after the liquid polymer plastic is cooled and formed, a liquid ABS plastic is injected into the mold cavity (103) to form a buffer layer (602) of the interior decoration part body (6); the above steps are repeated to inject liquid polymer polyethylene and polyketimine in turn to form a support layer (603) and a wear-resistant layer (604); after cooling, the injection molding process of the interior decoration part body (6) is completed; S3: After the injection molding of the automobile interior decoration part is completed, the rotating shaft (510) rotates to drive the gear (512) to rotate and drive the scraper member (513) to move, and at the same time, the connecting rope (509) is wound up by the winding disk (511). During this process, the baffle (506) will be pulled up so that the scraper member (513) can slide to one side of the installation cavity (505) and contact the inner wall of the automobile interior decoration part. Then the second mold member (301) is removed, and then the grinding member (503) will extend to the outside of the movable groove (5) and be located at the top of the automobile interior decoration part. The servo motor (2) can control the threaded rod (201) to rotate, so that the first mold member (3) slides upward to push the automobile interior decoration part formed inside the mold cavity (103) out of the mold cavity (103). In the process of removing the automobile interior decoration part, the grinding member (503) will grind the side wall of the automobile interior decoration part, and the scraper member (513) can scrape off the burrs on the inner wall of the automobile interior decoration part, thereby removing the burrs on the side wall and inner wall of the automobile interior decoration part.

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