Injection mold for automotive interior parts with wear-resistant coating
By introducing a fixing mechanism and a lifting mechanism into the injection mold, the problem of the lower mold being difficult to disassemble is solved, enabling continuous injection molding of the mold, improving production efficiency and mold lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINLEI MOLD CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-19
AI Technical Summary
Existing injection molds for automotive interior parts are difficult to disassemble quickly after molding, resulting in continuous injection and affecting production efficiency.
An injection mold with a wear-resistant coating was designed. Through the combined use of a fixing mechanism and a lifting mechanism, the lower mold can be quickly disassembled and replaced, ensuring that the mold can continue to be injection molded during the cooling process.
It enables rapid disassembly and replacement of molds when the workpiece is cooling, ensuring continuous operation of the molds, improving production efficiency and mold lifespan.
Smart Images

Figure CN224374722U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive interior parts processing, and more specifically, to an injection mold for automotive interior parts with a wear-resistant coating. Background Technology
[0002] Injection molds for automotive interior parts are a key process in the automotive manufacturing industry used to produce interior trim parts. They transform plastic materials into components such as dashboards, seats, and door trim panels through injection molding. The cavities of interior part molds are usually designed to match the shape and details of the trim parts, such as undercuts, reinforcing ribs, and curved surfaces.
[0003] The core of improving mold performance through surface treatment technology in existing technologies lies in enhancing the mold's wear resistance, corrosion resistance, and demolding efficiency through special coating materials, thereby extending mold life, reducing production costs, and ensuring product quality.
[0004] However, existing injection molds for automotive interior parts with wear-resistant coatings still have the following shortcomings during use: After the existing injection molds complete the injection molding, some materials need to be cooled for a certain period of time before the molded parts can be removed. Otherwise, the parts are prone to deformation. The lower mold and the base plate of the existing injection molds are usually connected together, making it inconvenient to disassemble the lower mold. As a result, the entire mold cannot be injected when the parts are cooling. Utility Model Content
[0005] To overcome the above shortcomings, this application provides an injection mold for automotive interior parts with a wear-resistant coating, which aims to improve the problem that the lower mold and the base plate of existing injection molds are usually connected together, making it inconvenient to disassemble the lower mold and causing the entire mold to be unable to be injected when the processed part is cooled.
[0006] This application provides an injection mold for automotive interior parts with a wear-resistant coating, including a base plate, a top plate for vertical movement above the base plate, an upper mold connected to the bottom of the top plate, a lower mold inside the base plate, a fixing mechanism for limiting the lower mold inside the base plate, and a lifting mechanism inside the base plate.
[0007] The fixing mechanism includes a placement groove, which is opened on the top of the base plate. A placement component is movably inserted into the placement groove. The lower mold is connected inside the placement component. A square plate is connected to the bottom of the placement component.
[0008] In one specific implementation, a first mounting plate is connected to one side of the top plate, and a first vertical plate is connected to one end of the first mounting plate.
[0009] In the above implementation process, by setting the first mounting plate, when the top plate moves downward, the first mounting plate can be moved, which in turn moves the first vertical plate downward.
[0010] In one specific implementation, a first inclined surface is provided at one end of the first vertical plate.
[0011] In the above implementation process, by setting the first inclined surface, when the first vertical plate moves downward, the first inclined surface will contact one end of the first moving plate, driving the first moving plate to move.
[0012] In one specific implementation, a first through hole is provided on both sides of the base plate, a first movable plate is slidably connected inside the first through hole, a first fixed plate is connected to the top of the first movable plate, a first telescopic rod is connected to one side of the first fixed plate, the other end of the first telescopic rod is connected to the inside of the base plate, and a first spring is sleeved on the outer surface of the first telescopic rod.
[0013] In the above implementation process, by setting the first spring, when the first moving plate moves under the action of the first vertical plate, it drives the first telescopic rod to extend, causing the first spring to stretch. When the first moving plate moves away from the first vertical plate, the first spring releases elastic potential energy, causing the first moving plate to reset.
[0014] In one specific implementation, a first slot and a second slot are provided on both sides of the square plate, and one end of the first movable plate is movably inserted into the first slot.
[0015] In the above implementation process, by setting the first slot, when the top plate moves downward, one end of the first moving plate can be inserted into the inside of the first slot. When the workpiece is pressed down and formed, the first moving plate can limit the position of the square plate, thereby limiting the position of the placement plate. This can prevent the lower mold from shaking during the pressing process.
[0016] In one specific implementation, the lifting mechanism includes two sets of second mounting plates, which are respectively connected to both sides of the top plate, and one end of the second mounting plate is connected to a second vertical plate.
[0017] In the above implementation process, by setting the second mounting plate, the second mounting plate can be moved when the top plate moves, thereby moving the second vertical plate.
[0018] In one specific implementation, a limiting plate is connected to one side of the second vertical plate.
[0019] In the above implementation process, by setting the limiting component, the second vertical plate can move, which in turn drives the limiting plate to move. After the workpiece is pressed down and formed, the top plate moves up, which in turn drives the limiting plate to move up.
[0020] In one specific implementation, a second through hole is provided on both sides of the base plate, a second movable plate is slidably connected inside the second through hole, a second fixed plate is connected to the top of the second movable plate, a second telescopic rod is connected to one side of the second fixed plate, the other end of the second telescopic rod is connected to the inside of the base plate, and a second spring is sleeved on the outer surface of the second telescopic rod.
[0021] In the above implementation process, by setting the second spring, when the second moving plate moves under the action of the limiting plate, it drives the second telescopic rod to extend, causing the second spring to stretch. When the second moving plate moves away from the limiting plate, the second spring releases elastic potential energy, causing the second moving plate to reset.
[0022] In one specific implementation, a second inclined surface is provided at one end of the second movable plate, and a third inclined surface is provided at the other end of the second movable plate.
[0023] In the above implementation process, by setting the second and third inclined surfaces, the third inclined surface can be contacted when the limiting plate moves upward, and the second moving part is squeezed to move in the direction of the placement groove.
[0024] In one specific implementation, one end of the second movable plate is movably inserted into the interior of the second slot.
[0025] In the above implementation process, by setting the second slot, when the second moving part moves in the direction of the placement slot, the second inclined surface contacts the second slot, slowly driving the square plate to move upward, thereby driving the placement part to move upward. When the top plate moves to the top, the top of the placement part is higher than the top of the bottom plate, which makes it easy to take the placement part out of the placement slot. When the top plate is at the bottom, the second inclined surface does not contact the second slot, and the top of the placement part is flush with the top of the bottom plate, which makes it easy for the upper and lower molds to press down and form.
[0026] Compared with the prior art, the beneficial effects of this application are as follows: By setting up a fixing mechanism and a lifting mechanism, after a set of processed parts is completed, the placement part can be taken out from the placement slot and placed elsewhere for cooling. When another set of placement parts is replaced, the mold can continue to perform injection molding. When the top plate moves down, the first moving part is inserted into the first slot to fix the placement part. After pressing and molding, the top plate moves up and the second moving part is inserted into the second slot, which makes the top of the placement part higher than the top of the bottom plate, making it easier to take the placement part out of the placement slot. This solves the problem that the lower mold and the bottom plate of the existing injection mold are usually connected together, making it inconvenient to disassemble the lower mold, which causes the entire mold to be unable to perform injection molding when the processed parts are cooling. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the 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 from these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of an injection mold for automotive interior parts with a wear-resistant coating, provided in an embodiment of this application.
[0029] Figure 2 A schematic diagram of the base plate structure provided for an embodiment of this application;
[0030] Figure 3 A schematic diagram of the top plate structure provided for an embodiment of this application;
[0031] Figure 4 A schematic diagram of the placement slot structure provided in the embodiments of this application;
[0032] Figure 5 A schematic diagram of the placement component structure provided for an embodiment of this application;
[0033] Figure 6 A schematic diagram of the square plate structure provided for an embodiment of this application;
[0034] Figure 7 A schematic diagram of the second movable plate structure provided for an embodiment of this application;
[0035] Figure 8 A schematic diagram of the first movable plate structure provided for an embodiment of this application.
[0036] In the diagram: 1. Base plate; 2. Fixing mechanism; 201. Placement component; 202. First mounting plate; 203. First inclined surface; 204. Placement slot; 205. First through hole; 206. Square plate; 207. First slot; 208. First moving plate; 209. First fixing plate; 2010. First spring; 2011. First telescopic rod; 2012. First vertical plate; 3. Lifting mechanism; 301. Second mounting plate; 302. Second vertical plate; 303. Limiting plate; 304. Second through hole; 305. Second moving plate; 306. Second slot; 307. Second spring; 308. Second inclined surface; 309. Third inclined surface; 3010. Second fixing plate; 3011. Second telescopic rod; 4. Top plate; 5. Lower mold; 6. Upper mold. Detailed Implementation
[0037] The technical solutions in 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.
[0038] Please see Figure 1 This application provides an injection mold for automotive interior parts with a wear-resistant coating, including a base plate 1.
[0039] Please see Figure 1 , Figure 2 and Figure 3 A top plate 4 for vertical movement is provided above the base plate 1. An upper mold 6 is connected to the bottom of the top plate 4. A lower mold 5 is provided inside the base plate 1. A fixing mechanism 2 for limiting the lower mold 5 is provided inside the base plate 1. A lifting mechanism 3 is provided inside the base plate 1. The outer surfaces of the upper mold 6 and the lower mold 5 are coated with chromium nitride to enhance the wear resistance, corrosion resistance and demolding efficiency of the mold.
[0040] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The fixing mechanism 2 includes a placement groove 204, which is opened on the top of the base plate 1. A placement component 201 is movably inserted into the placement groove 204. The lower mold 5 is connected to the inside of the placement component 201. A square plate 206 is connected to the bottom of the placement component 201.
[0041] In a specific configuration, a first mounting plate 202 is connected to one side of the top plate 4, and a first vertical plate 2012 is connected to one end of the first mounting plate 202. The first mounting plate 202 is configured such that when the top plate 4 moves downward, the first mounting plate 202 moves, which in turn moves the first vertical plate 2012 downward.
[0042] In a specific configuration, a first inclined surface 203 is provided at one end of the first vertical plate 2012. With the provision of the first inclined surface 203, when the first vertical plate 2012 moves downward, the first inclined surface 203 will contact one end of the first moving plate 208, thereby driving the first moving plate 208 to move.
[0043] In the specific configuration, a first through hole 205 is provided on both sides of the base plate 1. A first movable plate 208 is slidably connected inside the first through hole 205. A first fixed plate 209 is connected to the top of the first movable plate 208. A first telescopic rod 2011 is connected to one side of the first fixed plate 209. The other end of the first telescopic rod 2011 is connected to the inside of the base plate 1. A first spring 2010 is sleeved on the outer surface of the first telescopic rod 2011. The first spring 2010 is provided so that when the first movable plate 208 moves under the action of the first vertical plate 2012, it drives the first telescopic rod 2011 to extend, causing the first spring 2010 to stretch. When the first movable plate 208 moves away from the first vertical plate 2012, the first spring 2010 releases its elastic potential energy, causing the first movable plate 208 to return to its original position.
[0044] In the specific configuration, a first slot 207 and a second slot 306 are provided on both sides of the square plate 206. One end of the first moving plate 208 is movably inserted into the inside of the first slot 207. The first slot 207 allows one end of the first moving plate 208 to be inserted into the inside of the first slot 207 when the top plate 4 moves downward. When the workpiece is pressed down, the first moving plate 208 can limit the square plate 206, thereby limiting the placement plate and preventing the lower mold 5 from shaking during the pressing process.
[0045] In a specific configuration, the lifting mechanism 3 includes two sets of second mounting plates 301, which are respectively connected to both sides of the top plate 4. One end of each second mounting plate 301 is connected to a second vertical plate 302. The second mounting plates 301 can be moved when the top plate 4 moves, thereby moving the second mounting plates 301 and the second vertical plate 302.
[0046] In a specific configuration, a limiting plate 303 is connected to one side of the second vertical plate 302. By setting the limiting member, the second vertical plate 302 can move, thereby driving the limiting plate 303 to move. After the workpiece is pressed down and formed, the top plate 4 moves up, thereby driving the limiting plate 303 to move up.
[0047] In the specific configuration, a second through hole 304 is provided on both sides of the base plate 1. A second moving plate 305 is slidably connected inside the second through hole 304. A second fixed plate 3010 is connected to the top of the second moving plate 305. A second telescopic rod 3011 is connected to one side of the second fixed plate 3010. The other end of the second telescopic rod 3011 is connected to the inside of the base plate 1. A second spring 307 is sleeved on the outer surface of the second telescopic rod 3011. The second spring 307 can be used to extend the second telescopic rod 3011 when the second moving plate 305 moves under the action of the limiting plate 303, thereby stretching the second spring 307. When the second moving plate 305 moves away from the limiting plate 303, the second spring 307 releases its elastic potential energy, thereby resetting the second moving plate 305.
[0048] In a specific configuration, a second inclined surface 308 is provided at one end of the second moving plate 305, and a third inclined surface 309 is provided at the other end of the second moving plate 305. Through the configuration of the second inclined surface 308 and the third inclined surface 309, when the limiting plate 303 moves upward, it can contact the third inclined surface 309 and squeeze the second moving member to move towards the placement groove 204.
[0049] In a specific configuration, one end of the second movable plate 305 is movably inserted into the interior of the second slot 306. Through the configuration of the second slot 306, when the second movable component moves toward the placement slot 204, the second inclined surface 308 contacts the second slot 306, slowly driving the square plate 206 upward, thereby driving the placement component 201 upward. When the top plate 4 moves to the topmost position, the top of the placement component 201 is higher than the top of the bottom plate 1, making it easier to remove the placement component 201 from the placement slot 204. When the top plate 4 is at the bottommost position, the second inclined surface 308 does not contact the second slot 306, and the top of the placement component 201 is flush with the top of the bottom plate 1, facilitating the pressing and forming by the upper mold 6 and the lower mold 5.
[0050] The working principle of the automotive interior parts injection mold with wear-resistant coating is as follows: When using the automotive interior parts injection mold with wear-resistant coating, after a set of processed parts is completed, the placement part 201 can be removed from the placement groove 204 and placed elsewhere for cooling. Another set of placement parts 201 can be replaced, and the mold can continue injection molding. When the top plate 4 moves downward, it drives the first vertical plate 2012 downward, and the first inclined surface 203 contacts one end of the first moving part, causing the first moving part to insert into the first slot 207 to fix the placement part 201. This prevents the lower mold 5 from shaking during pressing molding. After pressing molding, the top plate 4 moves upward, causing the first moving plate 208 to move away from the first vertical plate 2012. Plate 2012, the first spring 2010 releases elastic potential energy, driving the first moving plate 208 to reset. The first moving plate 208 moves away from the first slot 207, the top plate 4 continues to move upward, the limiting plate 303 contacts the third inclined surface 309 opened by the second moving part, driving the second moving part to move towards the placement slot 204. The second inclined surface 308 contacts the second slot 306, slowly driving the square plate 206 to move upward, so that the top of the placement part 201 is higher than the top of the bottom plate 1, making it easier to remove the placement part 201 from the placement slot 204. This solves the problem that the lower mold 5 and the bottom plate 1 of the existing injection mold are usually connected together, making it inconvenient to disassemble the lower mold 5, resulting in the entire mold being unable to be injected when the processed part is cooled.
[0051] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An injection mold for automotive interior parts with a wear-resistant coating, characterized in that, include A base plate (1) is provided above the base plate (1) for moving up and down. An upper mold (6) is connected to the bottom of the top plate (4). A lower mold (5) is provided inside the base plate (1). A fixing mechanism (2) for limiting the lower mold (5) is provided inside the base plate (1). A lifting mechanism (3) is provided inside the base plate (1). The fixing mechanism (2) includes a placement groove (204), which is opened on the top of the base plate (1). A placement component (201) is movably inserted into the placement groove (204). The lower mold (5) is connected inside the placement component (201). A square plate (206) is connected to the bottom of the placement component (201).
2. The injection mold for automotive interior parts with a wear-resistant coating according to claim 1, characterized in that, A first mounting plate (202) is connected to one side of the top plate (4), and a first vertical plate (2012) is connected to one end of the first mounting plate (202).
3. The injection mold for automotive interior parts with a wear-resistant coating according to claim 2, characterized in that, The first vertical plate (2012) has a first inclined surface (203) at one end.
4. The injection mold for automotive interior parts with a wear-resistant coating according to claim 3, characterized in that, The base plate (1) has a first through hole (205) on both sides. A first moving plate (208) is slidably connected inside the first through hole (205). A first fixed plate (209) is connected to the top of the first moving plate (208). A first telescopic rod (2011) is connected to one side of the first fixed plate (209). The other end of the first telescopic rod (2011) is connected to the inside of the base plate (1). A first spring (2010) is sleeved on the outer surface of the first telescopic rod (2011).
5. The injection mold for automotive interior parts with a wear-resistant coating according to claim 4, characterized in that, The square plate (206) has a first slot (207) and a second slot (306) on both sides, and one end of the first movable plate (208) is movably inserted into the first slot (207).
6. The injection mold for automotive interior parts with a wear-resistant coating according to claim 1, characterized in that, The lifting mechanism (3) includes two sets of second mounting plates (301), which are respectively connected to both sides of the top plate (4). One end of the second mounting plate (301) is connected to a second vertical plate (302).
7. The injection mold for automotive interior parts with a wear-resistant coating according to claim 6, characterized in that, A limiting plate (303) is connected to one side of the second vertical plate (302).
8. The injection mold for automotive interior parts with a wear-resistant coating according to claim 7, characterized in that, The base plate (1) has a second through hole (304) on both sides. A second moving plate (305) is slidably connected inside the second through hole (304). A second fixed plate (3010) is connected to the top of the second moving plate (305). A second telescopic rod (3011) is connected to one side of the second fixed plate (3010). The other end of the second telescopic rod (3011) is connected to the inside of the base plate (1). A second spring (307) is sleeved on the outer surface of the second telescopic rod (3011).
9. The injection mold for automotive interior parts with a wear-resistant coating according to claim 8, characterized in that, The second movable plate (305) has a second inclined surface (308) at one end and a third inclined surface (309) at the other end.
10. The injection mold for automotive interior parts with a wear-resistant coating according to claim 9, characterized in that, One end of the second movable plate (305) is movably inserted into the inside of the second slot (306).