Angled top seat structure and mold

Abstract

This utility model discloses a slanted ejector seat structure and mold, relating to the field of mold technology. The slanted ejector seat structure includes a slanted ejector rod, a boss, a recess, a guide, and a seal. The boss includes a seat body and a raised step. The slanted ejector rod is rotatably mounted on the seat body. A first plane is provided on the side of the seat body away from the slanted ejector rod, and the raised step is connected to the first plane, extending away from the seat body. A second plane is provided on the side of the recess facing the seat body, and the first plane and the second plane slide in contact. The technical solution of this utility model, by employing the sliding contact of the first and second planes combined with the seal to form a sealed cavity, effectively seals the sliding contact area, preventing the intrusion of external dust, moisture, and corrosive substances, slowing down the oxidation rate of the lubricating medium, preventing rust and jamming of the sliding surface, and significantly improving the operational stability, durability, and maintenance cycle of the slanted ejector seat.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a slanted top seat structure and a mold. Background Technology

[0002] In injection molding of plastic products, lateral core pulling mechanisms are often used to facilitate the demolding of undercut structures (such as snap-fit). The lateral ejector seat, serving as the driving and guiding base for the lateral ejector, is fixed to the ejector plate. During ejection and resetting, it provides pushing and pulling forces to the lateral ejector and allows relative sliding displacement of the lateral ejector in the vertical mold opening direction. However, existing lateral ejector seats frequently experience problems such as jamming due to poor sliding during long-term operation, requiring frequent machine shutdowns for maintenance and mold repair. In severe cases, this can even lead to lateral ejector breakage or damage to other mold parts, seriously affecting the stability of mold operation and production efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose a slanted ejector seat structure and mold, which aims to solve the problem of slanted ejector seat being prone to jamming due to poor sliding during long-term operation.

[0004] To achieve the above objectives, this utility model proposes an inclined top seat structure, the inclined top seat structure comprising:

[0005] An angled ejector pin, which can slide with the rear mold component;

[0006] A convex seat, comprising a seat body and a convex step, wherein the inclined push rod is rotatably mounted on the seat body, a first plane is provided on the side of the seat body away from the inclined push rod, the convex step is connected to the first plane, and the convex step extends in a direction away from the seat body;

[0007] The recessed seat has a second plane on the side facing the seat body. The first plane and the second plane are slidably engaged. The second plane is recessed in a direction away from the seat body to form a groove. The raised step is located in the groove. The recessed seat is used to connect with the ejector plate component.

[0008] A guide member is connected to the recess, and a convex step is slidably engaged with the guide member so that the convex step can move relative to the groove in a first direction;

[0009] A sealing element is located between the first plane and the second plane, both of which abut against the sealing element to form a sealing cavity, and the groove is located within the sealing cavity.

[0010] In one embodiment, the guide member includes a guide post connected to the recess, and the protruding step is provided with a through hole for the guide post to pass through, and the guide post is slidably engaged with the through hole.

[0011] In one embodiment, the recessed seat is provided with a first mounting hole and a second mounting hole communicating with the groove. The two ends of the guide post are respectively inserted into the first mounting hole and the second mounting hole, and the walls of the first mounting hole and the second mounting hole abut against the outer wall of the guide post.

[0012] In one embodiment, the seal is connected to the first plane.

[0013] In one embodiment, the first plane includes a sliding abutment portion, a first mounting portion, and a second mounting portion. The first mounting portion is connected to the raised step. The second mounting portion and the sliding abutment portion are both arranged circumferentially along the first mounting portion. The sliding abutment portion slides in cooperation with the second plane. The second mounting portion is recessed in a direction away from the second plane to form an annular receiving groove. The annular receiving groove is used to receive the sealing element. The groove wall of the annular receiving groove and the second plane both abut against the sealing element to form the sealing cavity.

[0014] In one embodiment, the sliding abutment portion is located between the first mounting portion and the second mounting portion, and the sliding abutment portion is located within the sealing cavity.

[0015] In one embodiment, the width of the groove along the first direction is defined as D1, and the outer diameter of the second mounting portion is defined as D2, then: D2 > D1.

[0016] In one embodiment, a forming groove is provided at the end of the inclined push rod away from the seat body. The extension length of the forming groove along the first direction is defined as S1, and the displacement length of the convex step relative to the groove along the first direction is defined as S2. Then, S2 > S1.

[0017] In one embodiment, a mounting groove is provided on the side of the seat body away from the protruding step, and an opening is formed on the side of the mounting groove near the inclined push rod, wherein the inclined push rod is hinged to the groove wall of the mounting groove;

[0018] And / or,

[0019] The recessed seat has a threaded hole on the side away from the seat body, and the threaded hole is detachably connected to the ejector plate component by bolts.

[0020] Furthermore, this utility model also proposes a mold, which includes a front mold component, a rear mold component, an ejector plate component, an elastic reset component, and an inclined ejector seat structure as described in any of the above technical solutions. The rear mold component is provided with an inclined guide hole, and the inclined ejector rod is slidably engaged with the inclined guide hole. The front mold component is connected to the rear mold component, and the ejector plate component is connected to the recessed seat. The ejector plate component is used to connect with the ejector roller of the injection molding machine, and the ejector roller of the injection molding machine can pass sequentially through the ejector plate component, the recessed seat, the guide component, and the convex ejector seat. The step and the seat body drive the inclined ejector rod to move relative to the rear mold component towards the front mold component, so that the inclined ejector rod can be separated from the buckle; the rear mold component and the ejector plate component are both connected to the elastic reset member, and the elastic reset member can drive the inclined ejector rod to move relative to the rear mold component away from the front mold component in sequence through the ejector plate component, the recess, the guide member, the raised step and the seat body, so that the front mold component, the rear mold component and the inclined ejector rod enclose and form a cavity.

[0021] In this embodiment of the utility model, the inclined top seat structure solves the technical problem of jamming caused by poor sliding during the ejection and resetting process of the inclined top rod by setting a guide member and a convex step between the concave seat and the convex seat to form a sliding fit, and by forming a sealing cavity with the fitting structure of the first plane and the second plane and the sealing member. Specifically, the inclined ejector seat structure is fixed to the ejector plate component. Its motion driving force comes from the ejector roller of the injection molding machine pushing the ejector plate component, and the return force generated by the elastic reset component pushing back the ejector plate component when it is reset. The inclined ejector rod moves along the inclined guide hole in the rear mold component. Its motion trajectory can be decomposed into the motion vector in the mold opening direction (up and down direction) and the motion vector perpendicular to the mold opening direction (first direction). In order to adapt to this composite motion, the relative displacement between the inclined ejector rod and the recessed seat must be allowed in the first direction. Therefore, the protruding step of the boss extends into the groove of the recessed seat and slides in cooperation with the guide component fixed to the recessed seat in the first direction, forming the main force transmission path and guide structure. This allows the boss to effectively transmit the push and pull forces through the guide component when it reciprocates with the ejector plate component, and also allows the protruding step to slide in the groove in the first direction to compensate for the motion vector displacement of the inclined ejector rod in the perpendicular mold opening direction. Simultaneously, the first and second planes slide and compress the sealing element to form a sealed cavity, completely enclosing the sliding contact area of ​​the groove, guide element, and protruding step. Since this sliding area is effectively isolated from the external environment, it avoids increased friction and jamming caused by the intrusion of dust, debris, and other fine foreign objects, blocks the corrosion of the metal sliding surface by humid or saline air, significantly slows down the oxidation and deterioration rate of the lubricating medium, extends the maintenance cycle, and improves operational stability. In addition, this structure has direct force transmission, reliable fit, simple processing and assembly, and low sliding resistance. Thus, based on solving the problems of frequent jamming, corrosion, and lubrication failure caused by the exposed sliding surface of the existing open-type inclined top seat, it achieves the technical effects of long-term reliable operation of the inclined top seat structure, reduced downtime maintenance, and improved production efficiency. This embodiment of the invention employs a sliding fit structure of guide member and raised step, which realizes stable transmission and motion guidance of the main driving force during the ejection and resetting process of the inclined push rod, ensuring that the inclined push rod runs reliably along the predetermined trajectory. By adopting a sliding fit between the first plane and the second plane and combining it with a sealing member to form a sealed cavity, the sliding fit area is effectively sealed, preventing the intrusion of external dust, water vapor and corrosive substances, slowing down the oxidation rate of the lubricating medium, preventing rust and jamming of the sliding surface, and significantly improving the operational stability, durability and maintenance cycle of the inclined push seat. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of one embodiment of the inclined top seat structure of this utility model;

[0024] Figure 2 for Figure 1 AA sectional view;

[0025] Figure 3 This is a schematic diagram of an embodiment of the inclined top seat structure of this utility model in the mold-closed state;

[0026] Figure 4 This is a schematic diagram of an embodiment of the inclined top seat structure of this utility model in the mold opening state;

[0027] Figure 5 This is an exploded view of an embodiment of the mold of this utility model.

[0028] Explanation of icon numbers:

[0029] 100. Sloping top seat structure; 1. Sloping top rod; 11. Forming groove; 2. Plug; 21. Seat body; 211. First plane; 2111. Sliding contact part; 2112. First mounting part; 2113. Second mounting part; 21131. Annular receiving groove; 212. Mounting groove; 2121. Opening; 22. Raised step; 221. Through hole; 3. Recessed seat; 31. Second plane; 311. Groove; 32. First mounting hole; 33. Second mounting hole; 34. Threaded hole; 4. Guide component; 41. Guide post; 5. Sealing component; 6. Sealing cavity; 7. Pin;

[0030] 200. Mold; 210. Front mold component; 2101. Upper mold plate; 2102. Front mold fixing plate; 2103. Front mold core; 220. Rear mold component; 2201. Rear mold fixing plate; 22011. Angled guide hole; 2202. Rear mold core; 2203. Guide sleeve; 2204. Guide pillar; 240. Ejector plate component; 2401. First ejector plate; 2402. Second ejector plate; 2403. Ejector base plate; 2404. Square iron; 250. Accommodation space; 300. Product; 310. Buckle.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In injection molding of plastic products, lateral core pulling mechanisms are often used to facilitate the demolding of undercut structures (such as snap-fit). The lateral ejector seat, serving as the driving and guiding base for the lateral ejector, is fixed to the ejector plate. During ejection and resetting, it provides pushing and pulling forces to the lateral ejector and allows relative sliding displacement of the lateral ejector in the vertical mold opening direction. However, existing lateral ejector seats frequently experience problems such as jamming due to poor sliding during long-term operation, requiring frequent machine shutdowns for maintenance and mold repair. In severe cases, this can even lead to lateral ejector breakage or damage to other mold parts, seriously affecting the stability of mold operation and production efficiency.

[0036] After careful investigation, the applicant discovered that the root cause of the aforementioned problems lies in the industry's prevalent use of open-type inclined ejector structures, where the sliding mating surfaces are directly exposed to the external environment. On one hand, the lubricating oil, constantly exposed to air, is susceptible to rapid oxidation and deterioration due to high temperatures and humidity, resulting in decreased lubrication performance and frequent replacement. On the other hand, dust, debris, and other fine foreign matter from the production environment can directly fall onto the sliding surface, increasing friction, hindering movement, and even causing burning or jamming. Simultaneously, the metal components on the sliding surface are constantly in contact with humid or saline air, making them highly prone to corrosion, further exacerbating wear and movement instability. Because this open structure lacks effective sealing and isolation of the sliding area, it cannot fundamentally block pollution sources and corrosion paths. Even with enhanced lubrication or regular cleaning to alleviate the problems, frequent maintenance and sudden malfunctions are still difficult to avoid, hindering the long-term reliable operation of the mold.

[0037] The main purpose of this utility model is to propose an inclined top seat structure to solve the problem of the inclined top rod seat being unable to slide smoothly and easily getting stuck during long-term operation.

[0038] Please see Figure 1 and Figure 5 In one embodiment of this utility model, the inclined ejector structure 100 includes an inclined ejector rod 1, a boss 2, a recess 3, a guide member 4, and a sealing member 5: the inclined ejector rod 1 can slide with the rear mold component 220; the boss 2 includes a seat body 21 and a raised step 22, the inclined ejector rod 1 is rotatably mounted on the seat body 21, a first plane 211 is provided on the side of the seat body 21 away from the inclined ejector rod 1, the raised step 22 is connected to the first plane 211, and the raised step 22 extends in a direction away from the seat body 21; the recess 3 is provided on the side facing the seat body 21 with a second plane 31, the first plane 211... 11 is slidably engaged with the second plane 31, the second plane 31 is recessed in the direction away from the seat body 21 to form a groove 311, the raised step 22 is located in the groove 311, the recessed seat 3 is used to connect with the ejector plate component 240; the guide member 4 is connected to the recessed seat 3, the raised step 22 is slidably engaged with the guide member 4 so that the raised step 22 can move relative to the groove 311 in the first direction; the sealing member 5 is located between the first plane 211 and the second plane 31, the first plane 211 and the second plane 31 both abut against the sealing member 5 to form a sealing cavity 6, the groove 311 is located in the sealing cavity 6.

[0039] In the embodiments of this utility model, such as Figure 1As shown, the first direction is the left-right direction, and the mold opening direction is the up-down direction. The inclined ejector structure 100 solves the technical problem of the inclined ejector rod 1 getting stuck due to poor sliding during ejection and resetting by using a guide member 4 between the recess 3 and the protrusion 2 to form a sliding fit with the protruding step 22, and by cooperating with the fitting structure of the first plane 211 and the second plane 31 and the sealing cavity 6 formed by the sealing member 5. Specifically, the inclined ejector structure 100 is fixed to the ejector plate component 240. Its motion driving force comes from the ejection thrust generated by the ejector roller (not shown) of the injection molding machine pushing the ejector plate component 240, and the return pull generated by the elastic resetting member (not shown) pushing back the ejector plate component 240 during resetting. The inclined ejector rod 1 moves along the inclined guide hole 22011 in the rear mold component 220. Its motion trajectory can be decomposed into a motion vector in the mold opening direction (up-down direction) and a motion vector perpendicular to the mold opening direction (first direction). To adapt to this… In the compound motion, the relative displacement between the inclined ejector 1 and the recess 3 along the first direction must be allowed. Therefore, the protruding step 22 of the boss 2 extends into the groove 311 of the recess 3 and slides in cooperation with the guide 4 fixed to the recess 3 along the first direction, forming the main force transmission path and guide structure. This allows the boss 2 to effectively transmit the pushing and pulling forces through the guide 4 when it reciprocates with the ejector plate component 240, and also allows the protruding step 22 to slide in the groove 311 along the first direction to compensate for the motion vector displacement of the inclined ejector 1 in the vertical mold opening direction. Simultaneously, the first plane 211 and the second plane 31 slide and compress the sealing element 5 to form a sealed cavity 6, completely enclosing the sliding contact area of ​​the groove 311, guide element 4, and protruding step 22. Since the sliding area is effectively isolated from the external environment, it avoids the increased friction and jamming caused by the intrusion of dust, debris, and other fine foreign objects, blocks the corrosion of the metal sliding surface by humid or saline air, significantly slows down the oxidation and deterioration rate of the lubricating medium, extends the maintenance cycle, and improves the operational stability. In addition, the structure has direct force transmission, reliable fit, simple processing and assembly, and low sliding resistance. Thus, based on solving the problems of frequent jamming, corrosion, and lubrication failure caused by the exposed sliding surface of the existing open inclined top seat, it achieves the technical effects of long-term reliable operation of the inclined top seat structure 100, reduced downtime maintenance, and improved production efficiency.

[0040] The technical solution of this utility model achieves stable transmission and motion guidance of the main driving force of the inclined push rod 1 during the ejection and resetting process by adopting a sliding fit structure between the guide member 4 and the protruding step 22, ensuring that the inclined push rod 1 runs reliably along the predetermined trajectory; by adopting a sliding fit between the first plane 211 and the second plane 31 and combining it with the sealing member 5 to form a sealed cavity 6, the sliding fit area is effectively sealed, preventing the intrusion of external dust, water vapor and corrosive substances, slowing down the oxidation rate of the lubricating medium, preventing rust and jamming of the sliding surface, and significantly improving the operational stability, durability and maintenance cycle of the inclined push seat.

[0041] In this embodiment, the seal 5 can be an elastic sealing ring, specifically an O-ring, rectangular ring, or X-ring, made of oil-resistant, heat-resistant, and aging-resistant rubber material, such as nitrile rubber, fluororubber, or silicone rubber. By selecting seals 5 with different cross-sectional shapes and materials, they can be flexibly configured according to the actual working environment of the mold 200 (such as temperature, lubricating medium, and dust level), ensuring the long-term effectiveness of the sealing cavity 6, preventing external dust, moisture, and corrosive media from intruding into the sliding contact area, preventing grease oxidation and failure, and improving the reliability and service life of the inclined ejector seat during continuous operation.

[0042] Please see Figure 1 and Figure 2 In one embodiment, the guide member 4 includes a guide post 41, which is connected to the recess 3. A through hole 221 is provided on the protruding step 22 for the guide post 41 to pass through. The guide post 41 and the through hole 221 are slidably engaged. Specifically, the guide post 41 and the through hole 221 form a sliding engagement, thereby constituting a guide mechanism for the protruding seat 2 to move relative to the recess 3 in a first direction. When the ejector plate component 240 drives the recess 3 to reciprocate, the driving force is transmitted to the protruding step 22 through the guide post 41, thereby driving the protruding seat 2 and the inclined ejector rod 1 connected thereto to complete the ejection and resetting actions. The engagement between the through hole 221 and the guide post 41 constrains the degree of freedom of the protruding seat 2 in the first direction, ensuring that its movement trajectory is stable and does not deviate. Furthermore, since the contact form between the guide post 41 and the through hole 221 is a line contact between the cylindrical surface and the hole wall, the actual contact area is smaller compared to a large-area planar contact. The sliding resistance between the friction pairs is significantly reduced, which not only reduces driving energy consumption, but also effectively avoids the phenomenon of burning or jamming caused by frictional heat accumulation, and improves the smoothness of movement and response accuracy. At the same time, the structure is simple to process and easy to assemble, which helps to ensure the fitting accuracy and improve the overall operational reliability and service life of the inclined top seat.

[0043] According to one embodiment of the present invention, the guide member 4 can be configured as a guide key fixed to the recess 3, and a T-shaped groove or dovetail groove that slides with it is provided on the convex step 22. The guide and force transmission are achieved by limiting the groove wall. The guide member 4 can also be a linear bearing embedded in the recess 3, and its inner hole slides with the guide post 2204 provided on the convex step 22, thereby achieving stable guidance of the convex seat 2 relative to the recess 3 and ensuring the reliability of the movement of the inclined push rod 1 during the ejection and resetting process.

[0044] Please see Figure 1In one embodiment, the recessed seat 3 is provided with a first mounting hole 32 and a second mounting hole 33 communicating with the groove 311. The two ends of the guide post 41 are respectively inserted into the first mounting hole 32 and the second mounting hole 33, and the walls of the first mounting hole 32 and the second mounting hole 33 abut against the outer wall of the guide post 41. Specifically, this structure, by fixing both ends, firmly connects the guide post 41 to the recessed seat 3, effectively improving its installation rigidity and axial stability, preventing loosening, displacement, or bending when subjected to the thrust, tension, or lateral force generated by the reciprocating sliding of the protruding step 22, thereby ensuring that the guide post 41 is always in a precise position, providing a stable and reliable guiding reference for the linear movement of the protruding step 22. At the same time, the interference fit between the guide post 41 and the mounting hole not only enhances the connection strength but also reduces the micro-movement clearance between them, forming a local sealing barrier at the lateral boundary of the sealing cavity 6, inhibiting external dust, water vapor, and other pollutants from seeping into the interior of the sealing cavity 6 along the connection interface between the guide post 41 and the recessed seat 3, thus playing an auxiliary sealing role. The combination of the main sealing element 5 between the first plane 211 and the second plane 31 further enhances the sealing performance of the entire sliding guide area, effectively slows down the oxidation of the lubricating medium, prevents corrosion of the sliding surface and intrusion of foreign objects, reduces frictional resistance and jamming risk, and ensures the stability and reliability of the inclined top seat in long-term operation.

[0045] Please see Figure 1 and Figure 2 In one embodiment, the seal 5 is connected to the first plane 211. Specifically, this design allows the seal 5 to be pre-positioned on the side of the boss 2 before assembly, eliminating the need for separate placement or temporary fixing of the seal 5 during assembly. When the recess 3 mates with the boss 2, the second plane 31 of the recess 3 only needs to abut against and compress the seal 5 already fixed to the first plane 211 to form a complete sealing cavity 6, thus sealing the groove 311 and the guide sliding area. This single-sided connection and single-sided compression structure avoids the complex operation of simultaneously aligning and adjusting the seals 5 on both sides in traditional double-sided sealing, significantly simplifying the assembly process and improving assembly efficiency and positioning accuracy. It is particularly suitable for the multi-sloping top and compact mold 200 structure, while ensuring that the seal 5 is not easily shifted or omitted, thus improving the overall assembly reliability and manufacturability.

[0046] In one embodiment, the seal 5 can also be fixed to a designated position on the first plane 211 by means of adhesive or other methods.

[0047] Please see Figure 1 and Figure 2In one embodiment, the first plane 211 includes a sliding abutment portion 2111, a first mounting portion 2112, and a second mounting portion 2113. The first mounting portion 2112 is connected to the raised step 22. The second mounting portion 2113 and the sliding abutment portion 2111 are both arranged circumferentially along the first mounting portion 2112. The sliding abutment portion 2111 slides with the second plane 31. The second mounting portion 2113 is recessed in a direction away from the second plane 31 to form an annular receiving groove 21131. The annular receiving groove 21131 is used to receive the sealing member 5. Both the groove wall and the second plane 31 abut against the sealing element 5 to form a sealing cavity 6. Specifically, the first mounting part 2112 and the raised step 22 are connected to form the main structure of the boss 2. The sliding abutment part 2111 and the second mounting part 2113 are arranged around the first mounting part 2112 to form an annular layout. The sliding abutment part 2111 slides with the second plane 31 of the recessed seat 3 to realize the force transmission and relative movement between the boss 2 and the recessed seat 3. The second mounting part 2113 is recessed in the direction away from the second plane 31 to form an annular receiving groove 21131 for accommodating the sealing element 5. When the recessed seat 3 and the boss 2 are engaged, the second plane 31 presses the sealing element 5, so that it is simultaneously in close contact with the groove wall of the annular receiving groove 21131 and the second plane 31, thereby forming a continuous sealing interface in the circumferential direction, forming a sealing cavity 6. Since the sliding contact part 2111 and the second mounting part 2113 are arranged around the first mounting part 2112 in the circumferential direction, after the second plane 31 axially presses the sealing member 5, it can completely cover and seal the groove 311 on the recess 3, so that the internal space of the groove 311 is located within the sealing cavity 6. Therefore, the sliding engagement area of ​​the guide member 4 and the protruding step 22 is also covered in the sealing cavity 6, effectively preventing dust, water vapor and other pollutants from entering the groove 311 and the sliding engagement area, thus improving the operational stability and durability of the inclined top seat.

[0048] Please see Figure 1 and Figure 2In one embodiment, the sliding abutment portion 2111 is located between the first mounting portion 2112 and the second mounting portion 2113, and is located within the sealing cavity 6. Specifically, since the first mounting portion 2112 is connected to the raised step 22, and the second mounting portion 2113 is circumferentially provided with an annular receiving groove 21131 to accommodate the sealing member 5, the sliding abutment portion 2111 is located between the two. When the second plane 31 of the recessed seat 3 and the sealing member 5 are compressed together to form the sealing cavity 6, the sliding abutment portion 2111 is completely covered inside the sealing cavity 6. This design ensures that the contact sliding area of ​​the sliding abutment portion 2111 is always in a sealed environment, effectively blocking the intrusion of external dust, moisture and corrosive media, preventing the lubricating grease from oxidizing and failing, and avoiding problems such as rust on the sliding surface or jamming and burning caused by foreign objects entering. This not only ensures the long-term stability and low friction characteristics of the force transmission interface, but also further improves the reliability and service life of the inclined top seat under continuous operating conditions.

[0049] Please see Figure 3 and Figure 4 In one embodiment, the width of the groove 311 along the first direction is defined as D1, and the outer diameter of the second mounting portion 2113 is defined as D2. Therefore, D2 > D1. Specifically, this dimensional relationship indicates that the second mounting portion 2113 completely covers the outer periphery of the groove 311 in the radial direction. This ensures that when the recess 3 and the protrusion 2 mate, the annular receiving groove 21131 provided by the second mounting portion 2113 and the sealing element 5 it contains are located radially outside the groove 311, forming a complete annular covering structure. This design ensures that the sealing cavity 6 formed after the sealing element 5 and the second plane 31 of the recess 3 are pressed together can completely cover the opening 2121 area of ​​the groove 311, effectively preventing external contaminants from intruding into the internal sliding fit space from the periphery of the groove 311 towards the edge. Simultaneously, this dimensional fit relationship helps improve the reliability of the seal and the stability of the structure, avoiding the risk of leakage due to insufficient sealing area, and further ensuring the cleanliness, lubrication durability, and smooth operation of the inclined top seat during long-term reciprocating motion.

[0050] Please see Figure 3 and Figure 4In one embodiment, a forming groove 11 is provided at the end of the inclined ejector rod 1 away from the seat body 21. The extension length of the forming groove 11 along the first direction is defined as S1, and the displacement length of the convex step 22 relative to the groove 311 along the first direction is defined as S2. Therefore, S2 > S1. Specifically, the forming groove 11 on the inclined ejector rod 1 is used to form the snap-fit ​​310 structure on the molded product 300. The extension length of the forming groove 11 along the first direction is defined as S1, representing the effective core-pulling stroke that the inclined ejector rod 1 needs to complete during demolding. The displacement length of the convex step 22 relative to the groove 311 along the first direction is defined as S2, corresponding to the actual sliding stroke of the guide structure inside the inclined ejector seat. The condition that S2 > S1 indicates that the guide sliding stroke of the inclined ejector seat is greater than the minimum stroke required for the inclined ejector rod 1 to complete lateral core-pulling. This design ensures that after the angled ejector 1 completes the separation of the snap 310, a certain amount of travel is still maintained between the convex step 22 and the groove 311. This avoids hard impacts at the end of the movement or insufficient travel, jamming, or structural damage caused by assembly errors, thermal deformation, or other factors. At the same time, this travel margin helps to compensate for minor deviations in the ejection system of the mold 200, improves the stability and reliability of the mechanism's operation, and ensures that the angled ejector 1 can completely disengage from the undercut of the product 300, achieving a stable and stress-free demolding action and extending the service life of the mold 200.

[0051] Please see Figure 1 and Figure 2In one embodiment, a mounting groove 212 is provided on the side of the seat body 21 away from the protruding step 22, and an opening 2121 is formed on the side of the mounting groove 212 near the inclined ejector rod 1. The inclined ejector rod 1 is hinged to the groove wall of the mounting groove 212. And / or, a threaded hole 34 is provided on the side of the recessed seat 3 away from the seat body 21. The threaded hole 34 is detachably connected to the ejector plate component 240 by bolts. Specifically, in this embodiment, the inclined ejector rod 1 can be hinged to the groove wall of the mounting groove 212 by a pin 7 or a rotating shaft, realizing a rotatable connection between the inclined ejector rod 1 and the protruding seat 2. This hinged structure allows the inclined ejector rod 1 to swing slightly relative to the seat body 21 during ejection or resetting, effectively compensating for stress concentration caused by mold 200 assembly errors, thermal deformation, or guide deviation of the inclined guide hole 22011, avoiding excessive bending moment on the inclined ejector rod 1 leading to bending or breakage, and improving the adaptability and reliability of the mechanism. In this embodiment, the mounting groove 212 can penetrate the seat body 21 along the first direction, thereby significantly reducing the machining difficulty and facilitating direct milling or wire cutting from the end face of the seat body 21. This avoids the limitations on tool travel and chip removal in blind hole groove machining, improving machining accuracy and efficiency. Simultaneously, a threaded hole 34 is provided on the side of the recessed seat 3 away from the seat body 21. This threaded hole 34 is connected to the ejector plate component 240 by bolts, achieving detachable fixing between the inclined ejector structure 100 and the ejector plate component 240. This connection method is simple in structure and easy to assemble and disassemble, facilitating the maintenance, replacement, or adjustment of the inclined ejector structure 100. It also ensures stable and reliable power transmission during ejection and resetting, preventing loosening or detachment, further improving the maintainability and operational safety of the mold 200.

[0052] Please see Figures 3 to 5This utility model also proposes a mold 200, which includes a front mold component 210, a rear mold component 220, an ejector plate component 240, an elastic reset component, and an inclined ejector structure 100. The specific structure of the inclined ejector structure 100 is as described in the above embodiments. Since this mold 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The rear mold component 220 is provided with an inclined guide hole 22011, and the inclined ejector rod 1 is slidably engaged with the inclined guide hole 22011. The front mold component 210 is connected to the rear mold component 220, and the ejector plate component 240 is connected to the recess 3. The ejector plate component 240 is used to connect with the ejector roller of the injection molding machine. The ejector roller of the injection molding machine can drive the inclined ejector rod 1 to move relative to the rear mold component 220 towards the front mold component 210 through the ejector plate component 240, the recess 3, the guide member 4, the raised step 22, and the seat body 21 in sequence, so that the inclined ejector rod 1 can be separated from the buckle 310. Both the rear mold component 220 and the ejector plate component 240 are connected to the elastic reset member. The elastic reset member can be driven by the ejector plate component 240, the recess 3, the guide member 4, the raised step 22, and the seat body 21 in sequence. The component 240, recessed seat 3, guide component 4, raised step 22 and seat body 21 drive the inclined ejector rod 1 to move away from the front mold component 210 relative to the rear mold component 220, so that the front mold component 210, the rear mold component 220 and the inclined ejector rod 1 enclose and form a cavity (not shown in the figure); specifically, in this embodiment, the front mold component 210 includes an upper mold plate 2101, a front mold fixing plate 2102 and a front mold core 2103, the rear mold component 220 includes a rear mold fixing plate 2201, a rear mold core 2202, a guide sleeve 2203 and a guide post 2204, and the ejector plate component 240 includes a first ejector plate 2401, a second ejector plate 2402, an ejector base plate 2403 and a square iron 2404. The front mold core 2103 is provided with a first groove, and the rear mold core 2202 is provided with a second groove. The rear mold fixing plate 2201 is provided with an inclined guide hole 22011 that slides with the inclined ejector rod 1. The upper mold plate 2101 and the front mold core 2103 are respectively connected to opposite sides of the front mold fixing plate 2102, and the rear mold core 2202 is connected to the side of the rear mold fixing plate 2201 facing the front mold. The front mold fixing plate 2102 and the rear mold fixing plate 2201 are connected to each other, so that the first groove, the second groove and the forming groove 11 at the end of the inclined ejector rod 1 are connected and together enclose to form a cavity for molding the product 300. The guide post 2204 is fixed to the rear mold fixing plate 2201 and extends along the mold opening direction. The guide sleeve 2203 is fixed to the front mold fixing plate 2102 and sleeved on the outer periphery of the guide post 2204. The two slide together to form a guiding mechanism for the mold opening and closing of the mold 200, ensuring that the front mold component 210 and the rear mold component 220 are accurately aligned during the mold closing process and smoothly separated during the mold opening process, avoiding misalignment that could damage the cavity or the ejection mechanism.The ejector base plate 2403 is connected to the side of the rear mold fixing plate 2201 away from the front mold fixing plate 2102 via a square iron 2404. The rear mold fixing plate 2201, the square iron 2404, and the ejector base plate 2403 together form a receiving space 250. The first ejector panel 2401 is connected to the second ejector panel 2402. The second ejector panel 2402 is located within the receiving space 250 and can move relative to it in the vertical direction. The first ejector panel 2401 has a through hole for the recess 3 to pass through. After the recess 3 passes through the through hole, its threaded hole 34 is detachably connected to the second ejector panel 2402 by bolts. The second ejector panel 2402 is used to dock with the ejector roller of the injection molding machine to receive the ejection power. An elastic reset member is provided between the first ejector panel 2401 and the rear mold fixing plate 2201. Both the first ejector panel 2401 and the rear mold fixing plate 2201 are connected to the elastic reset member. During mold closing, the injection molding machine drives the front mold component 210 to move towards the rear mold component 220. The guide post 2204 inserts into the guide sleeve 2203 to achieve precise guidance and positioning. The front mold fixing plate 2102 and the rear mold fixing plate 2201 close and lock together, the front mold core 2103 and the rear mold core 2202 fit together, the first groove and the second groove are aligned, and the inclined ejector rod 1, in the reset state, has its molding groove 11 participating in the formation of the cavity. At this time, the cavity is closed and ready for injection molding. At the same time, the elastic reset component (such as a reset spring) is in a compressed state, providing preload for subsequent reset. During the mold opening process, after injection molding is completed and cooled, the injection molding machine releases the clamping force, and the ejector roller pushes the second ejector plate 2402 forward. The driving force is transmitted sequentially through the second ejector plate 2402, the recess 3, the guide 4, the protruding step 22 and the seat body 21, which drives the inclined ejector rod 1 to move along the inclined guide hole 22011 of the rear mold fixing plate 2201 towards the front mold component 210, realizing lateral core pulling, so that the inclined ejector rod 1 is separated from the snap-fit ​​310 structure of the product 300; then, the entire ejector plate component 240 continues to move upward, pushing the ejector pins and other ejection elements to completely eject the product 300 from the rear mold core 2202. After mold opening, the injection molding machine ejector retracts, and the elastic reset component releases its potential energy, pushing the first ejector plate 2401 to drive the second ejector plate 2402, the recess 3, the boss 2, and the inclined ejector rod 1 to return to their initial positions. The guide post 2204 and the guide sleeve 2203 maintain their engagement, ensuring that each component is accurately positioned and ready for the next mold closing. By adopting the above structure, the mold 200 achieves stable driving and reliable reset of the inclined ejector mechanism during mold closing and opening. The transmission path is clear and the linkage is reliable. Combined with the sealing cavity 6 design of the aforementioned inclined ejector seat structure 100, it effectively isolates external contaminants such as dust and moisture from eroding the sliding contact area, slows down the oxidation rate of the lubricating medium, prevents rust and jamming of the sliding surface, significantly improves the operational stability, durability, and demolding reliability of the inclined ejector mechanism in continuous production, simplifies the maintenance process, and improves the overall production efficiency and service life of the mold 200.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A ramped seat structure, characterized by, The inclined top seat structure includes: An angled ejector pin, which can slide with the rear mold component; A convex seat, comprising a seat body and a convex step, wherein the inclined push rod is rotatably mounted on the seat body, a first plane is provided on the side of the seat body away from the inclined push rod, the convex step is connected to the first plane, and the convex step extends in a direction away from the seat body; The recessed seat has a second plane on the side facing the seat body. The first plane and the second plane are slidably engaged. The second plane is recessed in a direction away from the seat body to form a groove. The raised step is located in the groove. The recessed seat is used to connect with the ejector plate component. A guide member is connected to the recess, and a convex step is slidably engaged with the guide member so that the convex step can move relative to the groove in a first direction; A sealing element is located between the first plane and the second plane, both of which abut against the sealing element to form a sealing cavity, and the groove is located within the sealing cavity.

2. The ejection cam structure according to claim 1, wherein The guide member includes a guide post, which is connected to the recessed seat. The convex step is provided with a through hole for the guide post to pass through, and the guide post slides in conjunction with the through hole.

3. The ejection cam structure according to claim 2, wherein The recessed seat is provided with a first mounting hole and a second mounting hole that communicate with the groove. The two ends of the guide post are respectively inserted into the first mounting hole and the second mounting hole, and the walls of the first mounting hole and the second mounting hole abut against the outer wall of the guide post.

4. The ejection cam structure according to claim 1, wherein The seal is connected to the first plane.

5. The inclined top seat structure as described in claim 4, characterized in that, The first plane includes a sliding abutment portion, a first mounting portion, and a second mounting portion. The first mounting portion is connected to the protruding step. The second mounting portion and the sliding abutment portion are both arranged circumferentially along the first mounting portion. The sliding abutment portion slides in cooperation with the second plane. The second mounting portion is recessed in a direction away from the second plane to form an annular receiving groove. The annular receiving groove is used to receive the sealing element. The groove wall of the annular receiving groove and the second plane both abut against the sealing element to form the sealing cavity.

6. The ejection cam structure according to claim 5, wherein The sliding abutment is located between the first mounting part and the second mounting part, and the sliding abutment is located inside the sealing cavity.

7. The ejection cam structure according to claim 5, wherein Let D1 be the width of the groove along the first direction, and D2 be the outer diameter of the second mounting part. Then, D2 > D1.

8. A skid structure according to any one of claims 1 to 7, wherein The inclined push rod is provided with a forming groove at the end away from the seat body. The extension length of the forming groove along the first direction is defined as S1, and the displacement length of the convex step relative to the groove along the first direction is defined as S2. Then, S2 > S1.

9. A skid structure according to any one of claims 1 to 7, wherein The seat body is provided with a mounting groove on the side away from the protruding step, and the mounting groove forms an opening on the side near the inclined push rod. The inclined push rod is hinged to the groove wall of the mounting groove. And / or, The recessed seat has a threaded hole on the side away from the seat body, and the threaded hole is detachably connected to the ejector plate component by bolts.

10. A mold characterized in that, The mold includes a front mold component, a rear mold component, an ejector plate component, an elastic reset component, and an inclined ejector seat structure as described in any one of claims 1 to 9. The rear mold component is provided with an inclined guide hole, and the inclined ejector rod is slidably engaged with the inclined guide hole. The front mold component is connected to the rear mold component, and the ejector plate component is connected to the recessed seat. The ejector plate component is used to connect with the ejector roller of the injection molding machine. The ejector roller of the injection molding machine can sequentially drive the inclined ejector rod to move relative to the rear mold component towards the front mold component through the ejector plate component, the recessed seat, the guide component, the raised step, and the seat body, so that the inclined ejector rod can be separated from the snap-fit. The rear mold component and the ejector plate component are both connected to the elastic reset component. The elastic reset component can sequentially drive the inclined ejector rod relative to the rear mold component towards the direction away from the front mold component through the ejector plate component, the recessed seat, the guide component, the raised step, and the seat body, so that the front mold component, the rear mold component, and the inclined ejector rod enclose and form a cavity.

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