A mold for molding interior parts of commercial vehicles

Abstract

This application provides a mold for molding interior trim parts for commercial vehicles, including an upper mold and a lower mold. The upper mold has a metal embedded part mounting area, and the metal embedded part mounting area is provided with a magnet for adsorbing the metal embedded part. The lower mold is provided with a punch, the installation position of which corresponds to the metal embedded part mounting area, for contacting the metal embedded part to form a hole structure on the interior trim part. In the above technical solution, the upper mold and the lower mold can be used to mold the interior trim part. The embedded part mounting area of ​​the upper mold is used to install the metal embedded part, and the magnet is used to adsorb the metal embedded part onto the upper mold. By setting the punch in the lower mold at the position corresponding to the metal embedded part mounting area, it is possible to achieve that during the molding process, the metal embedded part and the punch together process the hole structure located at the metal embedded part mounting position on the interior trim part.

Description

Technical Field

[0001] This application relates to the field of automotive interior parts manufacturing technology, and more specifically, to a mold for molding interior parts for commercial vehicles. Background Technology

[0002] Metal embedded parts need to be installed on the interior parts of commercial vehicles, and then the decorative panels are connected to the interior parts through the metal embedded parts.

[0003] The existing process for installing metal embedded parts into interior trim is divided into two steps: first, the interior trim is formed, and then the metal embedded parts are installed on the interior trim manually.

[0004] The process of manually installing metal embedded parts onto interior trim requires specialized tooling, increasing tooling costs; it also requires at least one person to operate; furthermore, during installation, manual handling of interior trim can easily lead to surface contamination, resulting in the scrapping of the trim; if the installation position of the metal embedded parts deviates significantly during manual installation, it can also lead to the scrapping of the interior trim with the metal embedded parts installed.

[0005] In some existing solutions, metal embedded parts are installed on interior trim parts by molding. However, the current molding method requires that the hole structure on the interior trim parts located at the installation position of the metal embedded parts be processed first, and then the metal embedded parts and interior trim parts are connected together by molding. Utility Model Content

[0006] The purpose of this application is to provide a mold for molding interior parts of commercial vehicles, which can realize the installation of metal embedded parts in interior parts by molding, and at the same time, process hole structures in the interior parts at the positions for installing metal embedded parts.

[0007] The embodiments of this application are implemented as follows:

[0008] In a first aspect, embodiments of this application provide a mold for forming interior trim parts for commercial vehicles, including an upper mold and a lower mold; the upper mold has a metal embedded part mounting area, the metal embedded part mounting area is provided with a magnet for adsorbing the metal embedded part, and the lower mold is provided with a punch, the mounting position of the punch corresponds to the metal embedded part mounting area, and is used to contact the metal embedded part to form a hole structure on the interior trim part.

[0009] In the above technical solution, the upper and lower dies can be used to form the interior trim parts. The pre-embedded part mounting area of ​​the upper die is used to install the metal pre-embedded part, and the magnet is used to attract the metal pre-embedded part to the upper die. By setting a punch in the lower die at the position corresponding to the metal pre-embedded part mounting area, it is possible to achieve that during the molding process, the metal pre-embedded part and the punch together process the hole structure located at the metal pre-embedded part mounting position on the interior trim parts.

[0010] In some alternative implementations, the metal embedded part installation area is provided with a groove for placing and positioning the metal embedded part.

[0011] In the above technical solution, the metal embedded part is positioned by the groove. During the process of connecting the metal embedded part with the interior trim part by mold closing, the displacement of the metal embedded part can be reduced, the position of the metal embedded part can be more accurate, and the yield of the final product can be improved.

[0012] In some alternative embodiments, the bottom of the groove is provided with a first mounting hole, the magnet is disposed in the first mounting hole, and the magnet is lower than the bottom of the groove.

[0013] In the above technical solution, by placing the magnet used to adsorb the metal embedded part in the first hole and below the bottom of the groove, the magnet can avoid contact with the metal embedded part during the mold closing process, thereby reducing the force on the magnet and extending the service life of the magnet.

[0014] In some alternative implementations, the magnet is interference-fitted within the first mounting hole.

[0015] In the above technical solution, since the magnet is interference-fitted into the first mounting hole, it is not easy for it to fall off during the mold closing process.

[0016] In some alternative embodiments, the lower mold is further provided with a cavity corresponding to the installation area of ​​the metal embedded part, the cavity being used to bend the sharp corners of the metal embedded part so as to connect the metal embedded part with the interior trim.

[0017] In the above technical solution, during the mold closing process, the sharp corners of the metal embedded parts are bent under the action of the cavity, thereby enabling connection with the interior trim parts.

[0018] In some alternative embodiments, the lower mold includes a lower mold body and an insert, the lower mold body being used to form interior parts with the upper mold; the cavity is disposed in the insert, and the insert is connected to the lower mold body.

[0019] In the above technical solution, by setting the cavity for forming metal embedded parts in the insert, the insert can be easily replaced and repaired.

[0020] In some alternative embodiments, the insert is provided with a second mounting hole, the punch is disposed in the second mounting hole, and is connected to the lower die body via a connector passing through the insert.

[0021] In the above technical solution, the punch is set on the insert, and the lower die body can be locked together by the connecting piece passing through the insert.

[0022] In some optional embodiments, the punch has a third mounting hole on the side facing the upper die, the bottom wall of the third mounting hole has a through hole, the connector is a bolt, the head of the bolt is located in the third mounting hole and contacts the bottom wall of the third mounting hole; the tail of the bolt passes through the through hole and is threaded to the lower die body.

[0023] In the above technical solution, bolts are used as connecting parts to lock the punch, insert and lower die body together, which facilitates disassembly and assembly.

[0024] In some alternative embodiments, the punch has a cutting edge on the side facing the upper die, the cutting edge being used to contact the metal embedded part to cut the interior trim, the cutting edge being annular in structure, and the third mounting hole being located inside the cutting edge.

[0025] In the above technical solution, the cutting edge is a ring structure, which makes it easy to cut holes in the interior trim.

[0026] In some alternative embodiments, the third mounting hole also has a tapered surface at the end facing the upper die, the tapered surface expanding outwards and extending to the cutting edge on the side facing the upper die.

[0027] In the above technical solution, the tapered surface can make the cutting edge sharper, making it easier to cut the interior parts, and can also serve as a guide when inserting the connector into the third mounting hole. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the metal embedded parts used in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the mold-closed state provided in an embodiment of this application;

[0031] Figure 3 A cross-sectional view of the punch provided in an embodiment of this application.

[0032] Icons: 100-Metal embedded part; 110-Plate body; 111-Through hole; 120-Sharp corner; 210-Upper die; 220-Lower die; 221-Lower die body; 222-Insert; 300-Magnet; 400-Punch; 410-Third mounting hole; 420-Cutting edge; 430-Conical surface; 500-Connector; 600-Interior trim. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] This application provides a mold for molding interior parts for commercial vehicles. It can be used to mold interior parts for commercial vehicles, and during the molding process, it allows for the installation of metal embedded parts on the interior parts and the provision of through holes in the interior parts. The interior parts in this application are decorative interior parts, such as headliner fabric, which can be pierced by metal structural parts. Therefore, molding can be used to install the metal embedded parts on the interior parts. In some existing embodiments, the interior parts are structural parts made of stitch-woven printed nonwoven fabric and lightweight GMT (Glass Mat Reinforced Thermoplastics) composite material.

[0040] Stitch-knitted nonwoven fabric is a type of dry-laid nonwoven fabric. The stitch-knitting method utilizes warp-knitted loop structures to reinforce fiber webs, yarn layers, non-woven materials (such as plastic sheets, plastic foils, etc.), or combinations thereof, to create nonwoven fabric. Nonwoven fabric is a product that resembles cloth but is not cloth without a weaving process; it is also called non-woven material. Because it is made simply by orienting or randomly arranging short textile fibers or filaments to form a fiber web structure, and then reinforcing it using mechanical, thermal, or chemical methods, interior trim can be molded into shape.

[0041] GMT is a prepreg sheet material with glass fiber mat as the reinforcing skeleton and thermoplastic as the matrix. It is composed of glass fiber and resins such as polypropylene (PP) and is mainly used for stamping and molding structural parts. Its matrix contains approximately 90% PP, with additional materials such as PBT and PET, and a glass fiber content ranging from 22% to 50%. GMT is essentially a glass fiber thermoplastic prepreg, similar to thermosetting SMC (Sheet Molding Compound), a pre-made semi-finished sheet material of glass fiber and thermoplastic. It can be softened by heating, then placed in a mold, and stamped and cooled to form various products.

[0042] like Figure 1 As shown, a conventional metal embedded part 100 includes a rectangular sheet 110 and sharp corner structures 120 located at the apex of the sheet 110, with all sharp corner structures 120 located on the same side of the sheet 110. The sharp corner structures 120 in the metal embedded part 100 are sharper at the end furthest from the sheet 110, facilitating the penetration of the interior trim 600 and thus allowing the metal embedded part 100 to be installed on the interior trim 600. Furthermore, the metal embedded part 100 is a ferromagnetic structural component, meaning it can be subjected to magnetic force in a magnetic field, and therefore can be attracted by a magnet 300. Specifically, the metal embedded part 100 can be a structural component made of iron, cobalt, nickel, their alloys, or iron oxides.

[0043] like Figure 2 As shown, the mold for molding interior parts 600 of commercial vehicles provided in this application includes an upper mold 210 and a lower mold 220. The upper mold 210 and the lower mold 220 are used to mold the interior parts 600 together through mold closing. The upper mold 210 and the lower mold 220 are the two main components of the mold. When implementing the mold provided in this application, the upper mold 210 is usually fixed on the press slide and moves actively, while the lower mold 220 is fixed on the worktable to provide support and positioning.

[0044] The upper mold 210 has a metal embedded part mounting area, which is provided with a magnet 300 for adsorbing the metal embedded part 100. The metal embedded part 100 is a structural component that needs to be installed onto the interior trim 600 through a mold-closing process. The metal embedded part mounting area in the upper mold 210 is used to mount the metal embedded part 100. After the metal embedded part 100 is placed in the metal embedded part mounting area of ​​the upper mold 210, it can be adsorbed by the magnet 300.

[0045] The lower mold 220 is equipped with a punch 400, the installation position of which corresponds to the installation area of ​​the metal embedded part 100, for contacting the metal embedded part 100 to form a hole structure on the interior trim 600. Before using the mold provided in this application for mold closing, the metal embedded part 100 needs to be installed on the upper mold 210, and the interior trim 600 to be formed needs to be placed on the lower mold 220, with the punch 400 and the metal embedded part 100 located on opposite sides of the interior trim 600. During the mold closing process, the punch 400 and the metal embedded part 100 cut the interior trim 600, thereby forming a hole structure on the interior trim 600. Therefore, in this embodiment, the installation position of the punch 400 corresponding to the installation area of ​​the metal embedded part means that during the mold closing process, the punch 400 can contact the metal embedded part 100 after passing through the interior trim 600. Therefore, during the mold closing process, the interior trim 600 can be squeezed by the opposing movement of the punch 400 and the metal embedded part 100 until a hole structure is cut out on the interior trim 600.

[0046] In the above embodiments, the mold closing process of the upper mold 210 and the lower mold 220 can form the interior trim 600 and install the metal embedded part 100 on the interior trim 600. Furthermore, the punch 400 in the lower mold 220 and the metal embedded part 100 in the upper mold 210 can be used to extrude the interior trim 600 during the mold closing process, thereby creating a hole structure on the interior trim 600. Using the mold provided in this application, the processes of forming the interior trim 600, connecting the metal embedded part 100 to the interior trim 600, and creating a hole structure on the interior trim 600 can be completed, greatly improving production efficiency.

[0047] In some embodiments, a groove is provided in the metal embedded part mounting area. The groove is used to place and position the metal embedded part 100. By providing a groove in the metal embedded part mounting area to accommodate the metal embedded part 100, the height of the sheet 110 of the metal embedded part 100 protruding from the surface of the upper mold 210 can be reduced, thereby reducing the degree of compression of the sheet 110 of the metal embedded part 100 on the interior trim 600 during mold closing. In addition, since the metal embedded part 100 is installed in the groove, the groove wall can also contact the metal embedded part 100, thereby positioning the metal embedded part 100. Therefore, in this embodiment, by reasonably setting the position of the groove, and by having the side wall of the groove contact the metal embedded part 100, the metal embedded part 100 can be positioned correctly on the interior trim 600. Furthermore, in the structure of the metal embedded part 100 as follows... Figure 1As shown, when it has a through hole 111 on the plate 110, a protrusion that can cooperate with the through hole 111 of the plate 110 in the metal embedded part 100 can also be provided at the bottom of the groove, so that the metal embedded part 100 can be positioned by the protrusion at the bottom of the groove cooperating with the plate 110 in the metal embedded part 100 during the installation of the metal embedded part 100.

[0048] In some embodiments, a first mounting hole is provided at the bottom of the groove, and a magnet 300 for adsorbing the metal embedded part 100 is disposed in the first mounting hole, with the magnet 300 being lower than the bottom of the groove. That is, when the metal embedded part 100 is adsorbed in the metal embedded part mounting area using the magnet 300, there is no contact between the magnet 300 and the metal embedded part 100. Therefore, during the mold closing process, the metal embedded part 100 will not exert a force on the magnet 300, thereby extending the service life of the magnet 300. Furthermore, the magnet 300 is 0.05mm to 0.2mm lower than the bottom of the first groove to give the magnet 300 a greater magnetic force on the metal embedded part 100; specifically, the magnet 300 may be 0.05mm, 0.1mm, 0.15mm, or 0.2mm lower than the bottom of the groove.

[0049] In some embodiments, the cross-section of the first mounting hole can be circular, rectangular, or other shapes. The cross-section of the first mounting hole is its section perpendicular to the mold closing direction.

[0050] In some embodiments, the first mounting hole can be a blind hole or a through hole; when the first mounting hole is a through hole, it is convenient to push the magnet 300 out of the first mounting hole, making it convenient to replace the magnet 300.

[0051] The magnet 300 provided in this application is a structural component capable of generating a magnetic field, exhibiting the characteristic of attracting or repelling magnetic materials. The magnet 300 used in this application can be a permanent magnet or a soft magnet. Permanent magnets can maintain their magnetism for a long time, while the magnetic polarity of soft magnets changes with the external magnetic field.

[0052] Furthermore, the magnet 300 used in this application can be a natural lodestone, which was the earliest discovered type of magnet 300; the compass, invented in ancient China, was a magnetic pointing tool. The magnet 300 used in this application can also be a processed magnet 300, such as a samarium cobalt magnet 300, a neodymium iron boron magnet, a ferrite magnet, an alnico magnet, or an iron-chromium-cobalt magnet.

[0053] In some embodiments, the number of magnets 300 may be only one. In this embodiment, in order to better attract the metal embedded part 100, the magnet 300 can be positioned at a position where the metal embedded part 100 is attracted from the center of the sheet 110 of the metal embedded part 100. That is, by reasonably setting the position of the first mounting hole in the bottom of the groove, when the metal embedded part 100 is positioned in the groove through the groove wall, the axis of the first mounting hole passes through the center of the sheet 110 of the metal embedded part 100.

[0054] In some embodiments, the number of magnets 300 may also be two. Correspondingly, the number of first mounting holes is also two. In this embodiment, the two magnets 300 are symmetrically arranged, and after the metal embedded part 100 is installed in the metal embedded part mounting area, the two magnets 300 are located... Figure 2 The positions of the two apex corners of the sheet 110 in the metal embedded part 100 are shown to make the magnetic force on the metal embedded part 100 more balanced. Therefore, the metal embedded part 100 is less likely to shake during the mold closing process, and can be better connected with the interior part 600, and the positional accuracy after connection is higher.

[0055] In some embodiments, the number of magnets 300 may also be four. Correspondingly, the number of first mounting holes is also four. In this embodiment, the four magnets 300 are symmetrically arranged, and after the metal embedded part 100 is installed in the metal embedded part mounting area, the four magnets 300 are located... Figure 2 The positions of the four apex corners of the sheet 110 in the metal embedded part 100 are shown to make the magnetic force on the metal embedded part 100 more balanced. Therefore, the metal embedded part 100 is less likely to shake during the mold closing process, and can be better connected with the interior part 600, and the positional accuracy after connection is higher.

[0056] In some embodiments, the magnet 300 is interference-fitted into the first mounting hole. That is, the magnet 300 is fixed in the first mounting hole of the upper mold 210 by interference fitting. In this embodiment, the fixing method of the magnet 300 is reliable and it is not easy for it to fall out of the first mounting hole. Furthermore, the diameter of the first mounting hole is 0.01mm to 0.05mm smaller than the diameter of the magnet. Within this range, it is possible to achieve interference fitting of the magnet 300 into the first mounting hole, and it is also convenient to install the magnet 300 into the first mounting hole. Specifically, the diameter of the first mounting hole can be 0.01mm, 0.02mm, 0.03mm, 0.04mm, or 0.05mm smaller than the diameter of the magnet 300.

[0057] In other embodiments, the magnet 300 may also be clearance-fitted to the first mounting hole and then bonded into the first mounting hole.

[0058] In some embodiments, the lower mold 220 is further provided with a cavity corresponding to the installation area of ​​the metal embedded part. This cavity is used to bend the sharp corner 120 of the metal embedded part 100 so that the metal embedded part 100 is connected to the interior trim 600. In this embodiment, when the upper mold 210 and the lower mold 220 are closed, the sharp corner 120 of the metal embedded part 100 installed in the installation area of ​​the metal embedded part in the upper mold 210 will pierce the interior trim 600 provided in the lower mold 220, and then contact the cavity of the lower mold 220. Then, under the pressure of the upper mold 210 and the action of the cavity in the lower mold 220, the sharp corner 120 of the metal embedded part 100 will bend, thereby allowing the metal embedded part 100 to be installed on the interior trim 600. The installation process of the metal embedded part 100 is similar to the process of stapled onto paper using a stapler.

[0059] Furthermore, in some embodiments, the lower mold 220 includes a lower mold body 221 and an insert 222. The lower mold body 221 is used to form the interior part 600 with the upper mold 210. A cavity for bending the sharp corner 120 of the metal embedded part 100 is provided in the insert 222, and the insert 222 is connected to the lower mold body 221. The insert 222 and the lower mold body 221 can be connected by an interference fit or by a bolt or other connecting component 500. In this embodiment, by providing the cavity for forming the metal embedded part 100 in the insert 222, the insert 222 can be easily replaced and repaired. In other embodiments, the lower mold 220 can also be a single structural component, without being divided into the lower mold body 221 and the insert 222.

[0060] In some embodiments, the insert 222 is further provided with a second mounting hole, the punch 400 is disposed in the second mounting hole, and is connected to the lower die body 221 via a connector 500 passing through the insert 222. That is, Figure 2 As shown, the punch 400, insert 222, and lower die body 221 are locked together by connector 500. Figure 2 In the embodiment shown, the connector 500 is a bolt; in other embodiments, the connector 500 may be other structures.

[0061] In some embodiments where the connector 500 is a bolt, such as Figure 3 As shown, the punch 400 has a third mounting hole 410 on the side facing the upper die 210, and the bottom wall of the third mounting hole 410 has a through hole. The head of the bolt is located in the third mounting hole 410 and contacts the bottom wall of the third mounting hole 410; the tail of the bolt passes through the through hole and is threaded to the lower die body 221.

[0062] Furthermore, the punch 400 has a cutting edge 420 on the side facing the upper die 210. The cutting edge 420 is used to contact the metal embedded part 100 to cut the interior trim 600. The cutting edge 420 has a ring structure, and the third mounting hole 410 is located inside the cutting edge 420. During the die closing process, the cutting edge 420 of the punch 400 and the metal embedded part 100 together compress the interior trim 600, thereby cutting a through hole in the interior trim 600 by the ring-shaped cutting edge 420 of the punch 400.

[0063] In some embodiments, the end of the third mounting hole 410 facing the upper mold 210 also has a tapered surface 430, which expands outward and extends to the cutting edge 420. The tapered surface 430 makes the end of the cutting edge 420 facing the upper mold 210 thinner, thus making the cutting edge 420 sharper and easier to cut the interior trim 600. Furthermore, the tapered surface 430 can also act as a guide during the installation of the connector 500, facilitating the insertion of the connector 500 into the third mounting hole 410.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mold for forming a commercial vehicle interior part, characterized in that, It includes an upper mold and a lower mold; the upper mold has a metal embedded part mounting area, and the metal embedded part mounting area is provided with a magnet for adsorbing the metal embedded part; the lower mold is provided with a punch, and the mounting position of the punch corresponds to the metal embedded part mounting area, for contacting the metal embedded part to form a hole structure on the interior trim.

2. The mold of claim 1, wherein, The installation area for the metal embedded part is provided with a groove, which is used to place the metal embedded part and to position the metal embedded part.

3. The mold of claim 2, wherein, The bottom of the groove is provided with a first mounting hole, the magnet is disposed in the first mounting hole, and the magnet is lower than the bottom of the groove.

4. The mold of claim 3, wherein, The magnet is interference-fitted into the first mounting hole.

5. The mold of claim 1, wherein, The lower mold is also provided with a cavity corresponding to the installation area of ​​the metal embedded part. The cavity is used to bend the sharp corners of the metal embedded part so that the metal embedded part can be connected to the interior trim.

6. The mold of claim 5, wherein, The lower mold includes a lower mold body and an insert. The lower mold body is used to form interior parts with the upper mold. The cavity is disposed in the insert, and the insert is connected to the lower mold body.

7. The mold of claim 6, wherein, The insert is provided with a second mounting hole, the punch is disposed in the second mounting hole, and is connected to the lower die body through a connector passing through the insert.

8. The mold of claim 7, wherein, The punch has a third mounting hole on the side facing the upper die. The bottom wall of the third mounting hole has a through hole. The connector is a bolt. The head of the bolt is located in the third mounting hole and contacts the bottom wall of the third mounting hole. The tail of the bolt passes through the through hole and is threaded to the lower die body.

9. The mold of claim 8, wherein, The punch has a cutting edge on the side facing the upper die. The cutting edge is used to contact the metal embedded part to cut the interior trim. The cutting edge has a ring structure, and the third mounting hole is located inside the cutting edge.

10. The mold of claim 9, wherein, The third mounting hole also has a tapered surface at the end facing the upper mold, and the tapered surface expands outward and extends to the cutting edge on the side facing the upper mold.

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