An injection mold for automobile parts

Abstract

The present application discloses an injection mold for automobile parts, comprising an upper mold, a lower mold, a driving device and a molding device, wherein the upper mold, the lower mold and the molding device cooperate with each other to form a cavity for molding a product, wherein the molding device is installed on the lower mold and is used to mold a grid mesh of the product; the molding device comprises a plurality of molding components, and the molding components cooperate with each other through intermittent components; the driving device is installed on the lower mold and the output end is connected to the intermittent component. The beneficial effects of the present application are as follows: when demolding, the driving device can first drive one of the molding components to move downward through the intermittent component, and then the remaining molding components will move downward and away from the grid mesh in turn under the action of the intermittent component, until the entire molding device and the molded grid mesh are demolded, thereby significantly reducing the risk of damage to the grid mesh and ensuring the quality of the product.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to an injection mold for automobile parts. Background Art

[0002] An injection mold is a tool used to produce plastic products; it also gives them a complete structure and precise dimensions. Injection molding is a processing method used for mass production of complex parts. Specifically, the process involves injecting heated, molten plastic into a mold cavity under high pressure using an injection molding machine. After cooling and solidification, the resulting molded product is formed.

[0003] like Figure 1 The figure shows the lower body 1 of an automobile front door, a crucial component of automotive interior trim. Located on the inside of the door, it has two left and right sections. This product is formed using an injection mold. The product features a grid 101, a location with relatively weak strength. Existing injection molds use an ejector mechanism to directly eject the product. However, the weak grid 101 is easily damaged during forced ejection, compromising product quality. Therefore, an injection mold for automotive parts is proposed to address this technical issue. Summary of the Invention

[0004] One of the purposes of this application is to provide an injection mold for automobile parts.

[0005] To achieve the above objectives, the technical solution adopted in this application is: an injection mold for automobile parts, comprising an upper mold, a lower mold, a driving device and a molding device, wherein the upper mold, the lower mold and the molding device cooperate with each other to form a cavity for molding products, wherein the molding device is installed on the lower mold and is used to mold a grid net of the product; the molding device includes a plurality of molding components, and the molding components are coordinated with each other through intermittent components; the driving device is installed on the lower mold and the output end is connected to the intermittent component; when demolding, the driving device is suitable for first driving one of the molding components to move and away from the grid net through the intermittent component, and then the remaining molding components are moved in turn and away from the grid net through the intermittent component until the molding device is separated from the molded grid net.

[0006] Preferably, the intermittent component includes a traction structure and a plurality of traction rings, the molding component is installed on the corresponding traction ring, the traction ring is vertically slidably installed on the lower mold, and the adjacent traction rings are matched and connected through the traction structure, and the output end of the driving device is connected to one of the traction rings; when demolding, the driving device is suitable for driving the corresponding molding component to move downward through one of the traction rings, and then the remaining traction rings move downward in sequence under the drive of the traction structure.

[0007] Preferably, the traction structure includes a traction block and a traction groove, and adjacent traction rings are slidably fitted together under the action of the traction block and the traction groove; when demolding, one of the traction rings moves downward, and then the relative sliding of the traction block and the traction groove drives the remaining traction rings to move downward in sequence.

[0008] Preferably, the intermittent component includes a rotating rod and a plurality of traction rings, the forming component is installed corresponding to the traction ring, the traction ring is vertically slidably installed on the lower mold, and the traction ring is sleeved on the outside of the rotating rod and is matched with the rotating rod through a guide structure, the rotating rod is vertically rotatably installed on the lower mold and is connected to the output end of the driving device; when demolding, the driving device is suitable for driving the rotating rod to rotate and act on the guide structure, and then the traction ring is driven by the guide structure to move downward in sequence.

[0009] Preferably, the guide structure includes a guide groove and a guide block, the guide block is installed on the outside of the rotating rod, and the guide groove is arranged inside the traction ring, and the guide groove and the guide block are slidably matched; the guide groove includes a horizontal groove 1 and an inclined groove that are connected, and the length of the horizontal groove 1 increases from top to bottom; when the guide block is matched with the horizontal groove 1, the traction ring is in a stationary state; when the guide block is matched with the inclined groove, the traction ring is suitable for moving downward.

[0010] Preferably, the guide groove also includes a horizontal groove 2, the inclined groove is curved and its two ends are respectively connected to the horizontal groove 1 and the horizontal groove 2, and the horizontal groove 1 and the horizontal groove 2 are located in the same horizontal plane; between the adjacent traction rings from top to bottom: the vertical projection lengths of the upper horizontal groove 1 and the inclined groove are smaller than the vertical projection length of the lower horizontal groove 1; when the guide block is suitable for moving from the inclined groove to the horizontal groove 2, the traction ring is suitable for moving up and resetting.

[0011] Preferably, the driving device includes a hydraulic cylinder, a gear and a rack, the gear is sleeved and installed on the rotating rod, the hydraulic cylinder is installed on the lower mold and one end of the piston rod is connected to the rack, and the gear is meshed with the rack; the hydraulic cylinder is suitable for driving the rotating rod to rotate through the transmission of the gear and the rack.

[0012] Preferably, adjacent traction rings are sleeved and slidably arranged, and the diameters of the traction rings increase gradually from top to bottom.

[0013] Preferably, the molding assembly includes a support plate and a plurality of core blocks, and the plurality of core blocks are spaced apart and mounted on the top of the support plate.

[0014] Preferably, the molding device also includes a grid block, which is detachably mounted on the lower mold and cooperates with the core block to form a grid mesh for molding the product. The core block is vertically inserted and slidably arranged in a grid cavity within the grid block, and a needle cavity that cooperates with the ejector mechanism is provided on the inner side of the grid cavity.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention divides the forming device into multiple forming components, and the forming components are coordinated through intermittent components. When demolding, the driving device can first drive one of the forming components to move downward through the intermittent component, and then the remaining forming components will move downward and away from the grid net in turn under the action of the intermittent component until the entire forming device and the formed grid net are demolded, thereby significantly reducing the risk of damage to the grid net and ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the existing product structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the mold of the present invention.

[0019] Figure 3 This is a schematic structural diagram of the upper mold after mold opening of the present invention.

[0020] Figure 4 It is a schematic diagram of the overall structure of the molding device of the present invention.

[0021] Figure 5 It is a schematic diagram of the specific structure of the molding device of the present invention.

[0022] Figure 6 It is a schematic diagram of the enlarged structure of point E of the present invention.

[0023] Figure 7 It is a schematic diagram of the specific structure of multiple molding components of the present invention.

[0024] Figure 8 This is a schematic structural diagram of one embodiment of the intermittent component of the present invention.

[0025] Figure 9 It is a schematic diagram of the guide groove structure of the present invention.

[0026] Figure 10 It is a schematic diagram of the specific matching relationship of adjacent guide grooves of the present invention.

[0027] Figure 11 It is a schematic structural diagram of the driving device of the present invention.

[0028] Figure 12 This is a schematic diagram of another embodiment of the intermittent component of the present invention before demoulding.

[0029] Figure 13 This is a schematic diagram of another embodiment of the intermittent component of the present invention during demoulding.

[0030] In the figure: 1. Lower body of automobile front door; 101. Grid; 2. Upper mold; 3. Lower mold; 4. Ejector mechanism; 5. Forming device; 501. Grid block; 502. Forming assembly; 5021. Core block; 5022. Support plate; 6. Driving device; 601. Hydraulic cylinder; 602. Rack; 603. Gear; 7. Intermittent assembly; 701. Rotating rod; 702. Traction ring; 703. Traction structure; 7031. Traction block; 7032. Traction groove; 8. Interlayer; 9. Grid cavity; 10. Needle cavity; 11. Guide structure; 1101. Guide block; 1102. Guide groove; 11021. Horizontal groove one; 11022. Inclined groove; 11023. Horizontal groove two. DETAILED DESCRIPTION

[0031] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are 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, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] One of the preferred embodiments of this application is as follows: Figures 1 to 13As shown, an injection mold for an automotive part includes an upper mold 2, a lower mold 3, a drive device 6, and a molding device 5. The upper mold 2, lower mold 3, and molding device 5 cooperate to form a cavity for molding a product, wherein the molding device 5 is mounted on the lower mold 3 and is used to mold the grid 101 of the product. The molding device 5 includes multiple molding components 502, which are coordinated with each other by intermittent components 7. The drive device 6 is mounted on the lower mold 3, and its output end is connected to the intermittent components 7. It should be noted that the molded automobile front door lower body 1 is the aforementioned product, and will be referred to as the product below.

[0035] It can be understood that when demolding, the driving device 6 can first drive one of the molding components 502 to move downward through the intermittent component 7, and then the remaining molding components 502 will move downward and away from the grid mesh 101 in turn under the action of the intermittent component 7 until the entire molding device 5 and the molded grid mesh 101 are demolded.

[0036] In the prior art, there are generally two ways to demold the formed grid mesh 101. The first is to directly lift the product with the ejector mechanism 4 of the mold, so that the formed grid mesh 101 is separated from the molding device 5. Of course, there is another way: a driving source is provided in the lower mold 3, and the driving source is used to drive the entire molding device 5 to move downward and separate from the grid mesh 101. Although this method can demold the molding device 5 and the grid mesh 101 before the product is ejected, the molding device 5 is an integral demolding device, and the force exerted on the grid mesh 101 is still relatively large, and the grid mesh 101 of the product is still easily damaged.

[0037] In the design of the present application, the integral forming device 5 is divided into multiple forming assemblies 502. The driving device 6 cooperates with the intermittent assembly 7 to sequentially separate and demold the multiple forming assemblies 502 from the grid 101, thereby significantly reducing the risk of damage to the grid 101. In addition, the forming assemblies 502 of the present application, through the cooperation of the intermittent assembly 7, can achieve demolding action one by one or in groups, making the demolding process smoother and further protecting the structural integrity of the grid 101.

[0038] Based on the above embodiment, although it can realize the sequential demolding of multiple molding components 502, we know that the grid net 101 on the product is composed of multiple evenly distributed mesh holes. If multiple adjacent mesh holes are demolded at the same time, it is still easy for the grid net 101 to be locally damaged during demolding.

[0039] Therefore, in order to solve the above technical problems, in one embodiment of the present application, Figure 7As shown, the molding assembly 502 includes a support plate 5022 and a plurality of core blocks 5021, and the plurality of core blocks 5021 are spaced apart and mounted on the top of the support plate 5022. It is understandable that the division of the molding assembly 502 at this time is not divided according to the area of ​​the grid 101, for example, divided into three or four equal parts according to the area. Its multiple core blocks 5021 are divided in an indefinite manner, and the core blocks 5021 located on the same molding assembly 502 are spaced apart. In this way, when the molding assembly 502 is demoulded downward, the phenomenon of two adjacent core blocks 5021 being demoulded at the same time will not occur. Instead, the core blocks 5021 spaced apart are demoulded in sequence, effectively avoiding the risk of local damage. In addition, the design of the support plate 5022 not only provides a mounting platform for the core blocks 5021, but also provides additional support during the demoulding process to ensure the stability of the demoulding process. Through this design, the stress concentration on the grid 101 can be further reduced, thereby protecting its structural integrity.

[0040] In this application, the intermittent component 7 has various structural forms, including but not limited to the following two:

[0041] Structure 1: Figure 12 As shown, the intermittent component 7 includes a traction structure 703 and multiple traction rings 702. The molding component 502 is installed on the corresponding traction ring 702. The traction ring 702 is vertically slidably installed in the lower mold 3, and the adjacent traction rings 702 are matched and connected through the traction structure 703. The output end of the driving device 6 is connected to one of the traction rings 702.

[0042] It is understandable that during demoulding, the driving device 6 can drive the corresponding molding assembly 502 to move downward through one of the traction rings 702, and then the remaining traction rings 702 are driven by the traction structure 703 to move downward in sequence, that is, the remaining molding assemblies 502 are moved downward in sequence, such as Figure 13 shown.

[0043] Specifically, such as Figure 12 As shown, the traction structure 703 includes a traction block 7031 and a traction groove 7032 , and adjacent traction rings 702 are slidably fitted with each other under the action of the traction block 7031 and the traction groove 7032 .

[0044] For example, we divide the forming components 502 into four groups (the following embodiments are also described using four groups as an example), namely (A), (B), (C) and (D), and the corresponding traction rings 702 are (a), (b), (c) and (d) from top to bottom, that is, (A) is installed on (a), (B) is installed on (b), (C) is installed on (c), and (D) is installed on (d), and the output end of the drive device 6 is connected to the bottom (d) traction ring 702.

[0045] It should be noted that, when not demoulding, Figure 12 As shown, all the traction blocks 7031 are against the top of the traction groove 7032, that is, the lower traction ring 702 supports the upper traction ring 702, and the four traction rings 702 are in a retracted state. During demolding, the driving device 6 drives the lowest (d) traction ring 702 to move downward, and then the (d) traction ring 702 drives the (D) molding component 502 to move downward for demolding; when the traction block 7031 on the (d) traction ring 702 moves downward to the bottom of the traction groove 7032 in the (c) traction ring 702, the (d) traction ring 702 pulls the (c) traction ring 702 downward, that is, the (C) molding component 502 moves downward for demolding; this process is repeated, so that the (B) and (A) molding components 502 can be moved downward and demolded in sequence, thereby realizing the step-by-step demolding process of the entire molding device 5.

[0046] In the above-mentioned driving device 6 , a hydraulic cylinder 601 is preferably used, that is, the extension and contraction of the hydraulic cylinder 601 is used to drive the (d) traction ring 702 to move up and down.

[0047] Structure 2: Figures 7 to 10 As shown, the intermittent component 7 includes a rotating rod 701 and multiple traction rings 702. The molding component 502 is installed on the corresponding traction ring 702. The traction ring 702 is vertically slidably installed on the lower mold 3, and the traction ring 702 is sleeved on the outside of the rotating rod 701 and is matched with the rotating rod 701 through the guide structure 11. The rotating rod 701 is vertically rotatably installed on the lower mold 3 and is connected to the output end of the driving device 6.

[0048] It is understandable that when demoulding, the driving device 6 can drive the rotating rod 701 to rotate, and then the rotating rod 701 acts on the four traction rings 702 through the guide structure 11, and then the traction rings 702 move downward in sequence under the drive of the guide structure 11.

[0049] Specifically, such as Figure 8 As shown, the guide structure 11 includes a guide groove 1102 and a guide block 1101. The guide block 1101 is installed outside the rotating rod 701, and the guide groove 1102 is set inside the traction ring 702. The guide groove 1102 and the guide block 1101 are slidably matched. Figure 9 As shown, the guide groove 1102 includes a horizontal groove 11021 and an inclined groove 11022. The horizontal groove 11021 increases in length from top to bottom. It should be noted that the horizontal groove 11021, as the name suggests, is horizontally disposed on the inner curved surface of the traction ring 702, while the inclined groove 11022 is inclined on the inner curved surface of the traction ring 702.

[0050] When not demoulding, Figure 9 As shown, the guide block 1101 is located at the leftmost side of the horizontal groove 11021. When the rotating rod 701 rotates under the action of the driving device 6, the guide block 1101 will move from the leftmost side of the horizontal groove 11021 to the right. Since the distance between the horizontal groove 11021 inside the (a) traction ring 702 is the shortest, the top guide block 1101 will first cooperate with the inclined groove 11022 inside the (a) traction ring 702. Therefore, at this time, the (a) traction ring 702 will move downward under the cooperation of the guide block 1101 and the inclined groove 11022. Similarly, after the rotating rod 701 rotates a certain angle, the corresponding guide block 1101 will cooperate with the inclined groove 11022 in the three traction rings 702 (b), (c), and (d) in turn, thereby realizing the subsequent downward movement of the three traction rings 702 (b), (c), and (d), that is, the four molding components 502 (A), (B), (C), and (D) are moved downward and demolded in turn.

[0051] Of course, there may be such problems during demoulding, such as Figure 7 As shown, if (A) molding component 502 is demolded first, the corresponding meshes on the grid 101 corresponding to (A) molding component 502 will lose their supporting function. Therefore, when (B) molding component 502 is subsequently demolded, a certain force may be applied to the meshes of (A) molding component 502, thereby affecting the stability of the grid 101 during demolding. Similarly, when (D) molding component 502 is demolded, the remaining meshes have already completed the demolding process, that is, the remaining meshes have lost their supporting function. This may easily cause the molded grid 101 to be partially damaged during demolding.

[0052] Therefore, in order to solve the above technical problems, further, Figure 9As shown, the guide groove 1102 also includes a horizontal groove 11023. The inclined groove 11022 is curved and connected to the horizontal groove 11021 and the horizontal groove 11023 at both ends. The inclined groove 11022 is approximately an inverted "V" structure, and the horizontal groove 11021 and the horizontal groove 11023 are located on the same horizontal plane. Of course, between adjacent traction rings 702 from top to bottom: the vertical projection length of the upper horizontal groove 11021 and the inclined groove 11022 is smaller than the vertical projection length of the lower horizontal groove 11021; specifically, as shown in FIG. Figure 10 As shown, we take the upper and lower traction rings 702 (a) and (b) as examples for explanation. Assume that in the traction ring 702 (a), the vertical downward projection of the horizontal groove 11021 and the inclined groove 11022 is "L", and in the traction ring 702 (b), the vertical projection length of the horizontal groove 11021 is "M", where "L" is less than "M". Of course, it can also be understood that if the traction rings 702 (a) and (b) are the same size, then the vertical projections of the upper horizontal groove 11021 and the inclined groove 11022 are located within the vertical projection of the lower horizontal groove 11021.

[0053] It should be noted that, from the above embodiment, the four traction rings 702 (a), (b), (c), and (d) move downward in sequence. Figure 10 For example, the top guide block 1101 on the rotating rod 701 will first cooperate with the inclined groove 11022 in the (a) traction ring 702, thereby causing the (a) traction ring 702 to move downward. When the guide block 1101 disengages from the inclined groove 11022 and enters the second horizontal groove 11023, the traction ring 702 will move upward and reset, so that the (A) molding component 502 can still be reset after demolding and support the corresponding mesh on the grid 101. Subsequently, the guide block 1101 on the rotating rod 701 will cooperate with the inclined groove 11022 in the (b) traction ring 702, similarly causing the (B) molding component 502 to move downward for demolding and move upward to reset, and this process is repeated. Subsequently, the (C) and (D) molding components 502 also undergo the above process.

[0054] It can be seen that each of the above-mentioned molding components 502 is demolded independently in sequence, and can be reset to support the corresponding mesh after demolding, and the core blocks 5021 on each molding component 502 are also arranged at intervals. For example, when one of the core blocks 5021 is moved down for demolding, its adjacent core block 5021 will be in a static support state, so that the grid mesh 101 of the product can be protected from damage during the subsequent demolding process, ensuring the smooth progress of the entire demolding process and avoiding quality problems of the finished product caused by improper demolding.

[0055] It should be noted that Structure 1 is simple, but the different molding components 502 do not provide support after demolding, making it suitable for stronger grid meshes 101. Structure 2 is relatively complex, but each independent molding component 502 still provides support after demolding, thereby ensuring the stability of the grid mesh 101, making it suitable for weaker grid meshes 101. Both structures can meet practical needs, and those skilled in the art can choose the one that best suits their needs.

[0056] In this embodiment, for the intermittent component 7 adopting structure 2, as shown in FIG. Figure 11 As shown, the corresponding driving device 6 includes a hydraulic cylinder 601, a gear 603, and a rack 602. The gear 603 is sleeved and mounted on the rotating rod 701. The hydraulic cylinder 601 is mounted on the lower mold 3, and one end of the piston rod is connected to the rack 602. The gear 603 meshes with the rack 602. It can be understood that the hydraulic cylinder 601 acts on the rack 602 through extension and contraction, and the rack 602 acts on the gear 603, and the gear 603 drives the rotating rod 701 to rotate.

[0057] Furthermore, for the intermittent component 7 adopting the second structure, as shown in FIG. Figure 9 As shown, adjacent traction rings 702 are sleeved and slidably arranged, and the diameters of the traction rings 702 increase from top to bottom. In other words, the lower traction rings 702 are sleeved between the upper traction rings 702, so that the adjacent traction rings 702 can limit each other, further improving stability.

[0058] In this embodiment, Figure 5 As shown, assuming that the formation of the grid 101 is entirely dependent on multiple forming components 502, and the forming components 502 are composed of multiple core blocks 5021, it is necessary to ensure that the multiple core blocks 5021 are closely matched. Moreover, the matching between the multiple core blocks 5021 will also have errors over time. This requires high processing accuracy and is difficult to repair if damaged. Therefore, as an improved design, Figure 5 and Figure 6 As shown, the forming device 5 further includes a grid block 501, which is detachably mounted on the lower mold 3 by bolts, and the grid block 501 cooperates with the core block 5021 to form the grid mesh 101 of the product. Specifically, as Figure 6 As shown, a plurality of connected partitions 8 are provided in the grid block 501 , the partitions 8 enclose a grid cavity 9 , and the core block 5021 is vertically inserted and slidably provided in the grid cavity 9 in the grid block 501 .

[0059] It is understood that the multiple core blocks 5021 are now independently designed through the grid cavities 9, and the grid cavities 9 also provide positioning and guidance for the core blocks 5021. This eliminates the need to consider the tight fit between adjacent core blocks 5021, further enhancing the flexibility and adaptability of the molding assembly 502. Furthermore, the introduction of the grid blocks 501 not only simplifies the maintenance and replacement process of the molding device 5 but also reduces overall production costs.

[0060] like Figure 6 As shown, since the grid block 501 is stationary during demoulding, after the core block 5021 and the grid mesh 101 are demoulded, a small part of the grid mesh 101 is still bonded to the top of the partition 8. At this time, a needle cavity 10 can be provided on the inner side of the grid cavity 9 (i.e., the top of the partition 8). The needle cavity 10 cooperates with the ejector mechanism 4 of the mold itself, i.e., the ejector of the ejector mechanism 4 is located in the needle cavity 10, and then the ejector mechanism 4 is used for subsequent thorough demoulding.

[0061] Further, such as Figure 5 and Figure 6 As shown, the mesh shape of the grid net 101 near the edge is generally irregular and of various shapes, so the corresponding core block 5021 can be fixedly installed at the top of the grid block 501 near the edge, and the mesh near the edge is directly connected to the product itself, so the strength is relatively large, and there is no need to worry about damage during the subsequent ejector demolding process.

[0062] We take the intermittent component 7 adopting structure 2 as an example to illustrate the working principle of the present invention as follows:

[0063] When the mold is opened, the upper mold 2 and the lower mold 3 are separated, and then the product is demoulded, the hydraulic cylinder 601 is started to act on the rack 602, the rack 602 acts on the gear 603, and the gear 603 drives the rotating rod 701 to rotate, as shown in FIG. Figure 8As shown, at this time, the guide block 1101 will move in the corresponding guide groove 1102. Since the horizontal groove 11021 inside the (a) traction ring 702 has the shortest distance, the uppermost guide block 1101 will first cooperate with the inclined groove 11022 inside the (a) traction ring 702. Therefore, at this time, the (a) traction ring 702 will move downward under the cooperation of the guide block 1101 and the front half of the inclined groove 11022, thereby realizing the demoulding of the (A) molding component 502 and the corresponding mesh; then when the guide block 1101 disengages from the inclined groove 11022 and enters the horizontal groove 2 11023, the traction ring 702 will move up and reset under the cooperation of the guide block 1101 and the rear half of the inclined groove 11022, thereby the (A) molding component 502 can still reset after demoulding and support the corresponding mesh on the grid 101. Similarly, the following (B), (C) and (D) molding components 502 are demoulded independently in sequence, thereby completing the demoulding process of the molding device 5 and the grid 101. Finally, the ejector mechanism 4 is activated to eject the entire product from the lower mold 3.

[0064] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An injection mold for automobile parts, characterized in that: include: An upper mold, a lower mold, a driving device, and a molding device, wherein the upper mold, the lower mold, and the molding device cooperate with each other to form a mold cavity for molding a product, wherein the molding device is mounted on the lower mold and is used to mold a grid of the product; the molding device includes a plurality of molding components, and the molding components are coordinated with each other through intermittent components; the driving device is mounted on the lower mold, and the output end is connected to the intermittent component; The intermittent assembly includes a traction structure and a plurality of traction rings. The forming assembly is mounted on a corresponding traction ring. The traction ring is vertically slidably mounted on the lower mold. Adjacent traction rings are cooperatively connected via the traction structure. The output end of the driving device is connected to one of the traction rings. During demolding, the driving device is adapted to drive the corresponding forming assembly downward via one of the traction rings, and the remaining traction rings are then driven by the traction structure to move downward in sequence. Adjacent traction rings are sleeved and slidably arranged, and the diameters of the traction rings increase gradually from top to bottom; The molding assembly includes a support plate and a plurality of core blocks, wherein the plurality of core blocks are spaced apart and mounted on the top of the support plate.

2. The injection mold for automobile parts according to claim 1, characterized in that: The traction structure includes a traction block and a traction groove, and adjacent traction rings are slidably fitted together by the traction block and the traction groove; when demolding, one of the traction rings moves downward, and then the relative sliding of the traction block and the traction groove drives the remaining traction rings to move downward in sequence.

3. An injection mold for automobile parts, characterized in that: include: An upper mold, a lower mold, a driving device, and a molding device, wherein the upper mold, the lower mold, and the molding device cooperate with each other to form a mold cavity for molding a product, wherein the molding device is mounted on the lower mold and is used to mold a grid of the product; the molding device includes a plurality of molding components, and the molding components are coordinated with each other through intermittent components; the driving device is mounted on the lower mold, and the output end is connected to the intermittent component; The intermittent assembly includes a rotating rod and a plurality of traction rings. The forming assembly is mounted on the corresponding traction rings. The traction rings are vertically slidably mounted on the lower mold. The traction rings are sleeved on the outside of the rotating rod and are connected to the rotating rod via a guide structure. The rotating rod is vertically rotatably mounted on the lower mold and is connected to the output end of the driving device. During demolding, the driving device is suitable for driving the rotating rod to rotate and act on the guide structure, so that the traction rings are driven by the guide structure to move downward in sequence. The molding assembly includes a support plate and a plurality of core blocks, wherein the plurality of core blocks are spaced apart and mounted on the top of the support plate.

4. The injection mold for automobile parts according to claim 3, characterized in that: The guide structure includes a guide groove and a guide block, wherein the guide block is installed outside the rotating rod, and the guide groove is provided inside the traction ring, and the guide groove and the guide block are in sliding cooperation; The guide groove includes a connected horizontal groove 1 and an inclined groove, and the length of the horizontal groove 1 increases from top to bottom; when the guide block cooperates with the horizontal groove 1, the traction ring is in a stationary state; when the guide block cooperates with the inclined groove, the traction ring is suitable for moving downward.

5. The injection mold for automobile parts according to claim 4, characterized in that: The guide groove also includes a horizontal groove 2, the inclined groove is curved and its two ends are respectively connected to the horizontal groove 1 and the horizontal groove 2, and the horizontal groove 1 and the horizontal groove 2 are located in the same horizontal plane; between the adjacent traction rings from top to bottom: the vertical projection lengths of the upper horizontal groove 1 and the inclined groove are smaller than the vertical projection length of the lower horizontal groove 1; when the guide block is suitable for moving from the inclined groove to the horizontal groove 2, the traction ring is suitable for moving up and resetting.

6. The injection mold for automobile parts according to claim 5, characterized in that: The driving device includes a hydraulic cylinder, a gear and a rack. The gear is installed in a sleeve on the rotating rod. The hydraulic cylinder is installed on the lower mold and one end of the piston rod is connected to the rack. The gear is meshed with the rack. The hydraulic cylinder is suitable for driving the rotating rod to rotate through the transmission of the gear and the rack.

7. The injection mold for automobile parts according to any one of claims 1 to 6, characterized in that: The molding device also includes a grid block, which is detachably mounted on the lower mold and cooperates with the core block to form a grid net for molding the product. The core block is vertically inserted and slidably arranged in a grid cavity within the grid block, and a needle cavity is provided on the inner side of the grid cavity to cooperate with the ejector mechanism.

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