slider shoveling base mechanism

Abstract

The utility model discloses a slider spade base mechanism relates to precision mould manufacturing and forming technical field, and this novel mechanism includes front template, fixed plate subassembly and stripping assembly, and the front template is provided with through -hole, and the front template is movably connected with fixed plate subassembly to be close to or away from fixed plate subassembly, and fixed plate subassembly is provided with movable slot, and the stripping assembly includes pull rod, elastic part, limit stop, spade base and slider structure, and the pull rod passes through the through -hole and is connected in the spade base, and one end of elastic part is located in the one end of pull rod away from spade base, and the other end is abutted on the circumferential edge of one side of through -hole away from spade base, and the limit stop is located in fixed plate subassembly, and is provided with screw hole and is fixed in fixed plate subassembly, and the spade base is slidably connected with limit stop, and the partial structure of spade base is stopped by limit stop periphery, and the spade base has the inclined plane away from front template, and the slider structure is slidably connected in the slot circumferential wall of movable slot and is slidably abutted on inclined plane, and the slider structure is configured as connecting mould.

Description

Technical Field

[0001] This utility model relates to the field of precision mold manufacturing and forming technology, and in particular to a slider shovel base mechanism. Background Technology

[0002] In the field of precision mold manufacturing and forming, the sliding block shovel mechanism is a core component for achieving lateral core pulling, demolding, and precision assembly of parts. Its performance directly affects the precision, production efficiency, and service life of the mold. With the increasing demand for product refinement and miniaturization in industries such as electronics and medical devices, the structure of precision molds is becoming increasingly complex, placing higher demands on the spatial layout and motion precision of the sliding block shovel mechanism.

[0003] To balance demolding reliability and mold strength, the industry generally adopts an integrated "shovel base + slider" structure: each slider and shovel base is locked together to the front mold plate. When the mold is opened, the one-time mold opening stroke between the A plate and the front mold plate simultaneously drives all the front mold sliders to complete the core pulling.

[0004] However, this integral structure has defects when there are different undercut depths in the same front mold area. If one slider requires a longer core-pulling stroke to be completely demolded due to a deeper undercut, while the other sliders have shorter core-pulling strokes, all sliders must complete the long core-pulling stroke synchronously with the shovel base. The excessively long stroke causes a significant decrease in the ratio of the guide length of some sliders to the core-pulling distance. When the slider moves in the guide groove, it may disengage from the guide groove and tilt, resulting in inaccurate positioning when the slider returns to its original position, and a risk of mold collision at the moment of mold closing. Utility Model Content

[0005] The main purpose of this invention is to propose a slider base mechanism that controls the sliding distance of sliders with different strokes to meet the needs of multiple sliders with different strokes in the front mold, and effectively reduces the risk of collision when the slider returns to its original position.

[0006] To achieve the above objectives, the present invention proposes a slider shovel base mechanism, comprising: Front template, wherein the front template has through holes; A fixed plate assembly, wherein the front template is movably connected to the fixed plate assembly to move closer to or further away from the fixed plate assembly, and the fixed plate assembly has a movable slot; and A demolding assembly includes a pull rod, an elastic element, a limiting block, a shovel base, and a slider structure. The pull rod passes through the through hole and is connected to the shovel base. One end of the elastic element is located at the end of the pull rod away from the shovel base, and the other end abuts against the periphery of the through hole on the side opposite to the shovel base. The limiting block is located on the fixing plate assembly and has screw holes for fixing to the fixing plate assembly. The shovel base is slidably connected to the limiting block, and a portion of the shovel base is blocked and limited by the periphery of the limiting block. The shovel base has an inclined surface opposite to the front template. The slider structure is slidably connected to the peripheral wall of the movable groove and slidably abuts against the inclined surface. The slider structure is configured to connect to the mold. Attached Figure Description

[0007] 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.

[0008] Figure 1 A schematic diagram of an embodiment of the slider shovel base mechanism provided by this utility model; Figure 2 for Figure 1 Sectional view along AA; Figure 3 for Figure 2 A partial enlarged view of an embodiment at point B; Figure 4 for Figure 2 A partially enlarged view of another embodiment at point B; Figure 5 This is a schematic diagram of the demolding assembly in the slider shovel base mechanism; Figure 6 This is a schematic diagram of the shovel base in the slider shovel base mechanism.

[0009] Explanation of icon numbers: 1000. Slider base mechanism; 1. Front template; 1a. Through hole; 1b. Movable hole; 2. Fixed plate assembly; 2a. Movable groove; 21. Fixed side template; 22. Front mold core; 31. Tie rod; 311. convex ring; 32. Elastic element; 33. Limiting block; 33a. Threaded hole; 34. Slider base; 341. Sliding section; 342. Abutting section; 342a. Sliding groove; 342a1. Inclined surface; 342a2. Limiting groove; 35. Slider structure; 351. Slider; 3511. Sliding part; 351a. Through hole; 352. Insert pin; 3521. Protrusion; a. Mold.

[0010] 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

[0011] 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 scope of protection of the present utility model.

[0012] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), 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.

[0013] 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.

[0014] In existing technologies, the precision mold manufacturing field has long employed an integral slider base structure, where multiple sliders are locked to the front mold plate, and all sliders are driven to pull the core synchronously through a single mold opening stroke. When there are different undercut depths in the same front mold area, the slider with the deeper undercut requires a longer core pulling stroke, while the slider with the shallower undercut only requires a shorter stroke. The integral structure forces all sliders to follow the longest stroke, resulting in an excessively low ratio of the guide length to the core pulling distance for the slider with the shallower undercut. During movement, it is prone to detaching from the guide groove and tilting, leading to positioning deviations and the risk of mold collision during mold closing.

[0015] To solve the above problems, this utility model proposes a slider shovel base mechanism 1000. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 A schematic diagram of an embodiment of the slider shovel base mechanism 1000 provided by this utility model.

[0016] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 This utility model proposes a slider-shovel base mechanism 1000, including a front template 1, a fixed plate assembly 2, and a demolding assembly; the front template 1 has a through hole 1a; the front template 1 is movably connected to the fixed plate assembly 2 to move closer to or further away from the fixed plate assembly 2, and the fixed plate assembly 2 has a movable groove 2a; the demolding assembly includes a pull rod 31, an elastic element 32, a limiting block 33, a shovel base 34, and a slider structure 35; the pull rod 31 passes through the through hole 1a and is connected to the shovel base 34, and one end of the elastic element 32 is located on the pull rod 31 away from the shovel base 34. One end of the shovel base 34 is attached to the periphery of the through hole 1a on the side away from the shovel base 34; the limiting block 33 is provided on the fixed plate assembly 2 and has a threaded hole 33a for fixing to the fixed plate assembly 2; the shovel base 34 is slidably connected to the limiting block 33, and part of the structure of the shovel base 34 is blocked and limited by the periphery of the limiting block 33; the shovel base 34 has an inclined surface 342a1 away from the front template 1, and the slider structure 35 is slidably connected to the groove periphery of the movable groove 2a and slidably abuts against the inclined surface 342a1; the slider structure 35 is configured to connect the mold a.

[0017] The movable connection between the front template 1 and the fixed plate assembly 2 refers to their relative movement via guide posts, guide sleeves, or slide rail structures. Specifically, the guide posts can be embedded in the guide sleeves, allowing the front template 1 to move axially along the fixed plate assembly 2. The elastic element 32 is a component used to store elastic potential energy, specifically a helical spring or elastic rubber ring. Its compression deformation stores energy, which pushes the pull rod 31 to reset after the external force disappears. The threaded hole 33a of the limiting block 33 is a hole structure penetrating the limiting block 33. Its inner diameter is smaller than the outer diameter of the corresponding part of the shovel base 34, so that the shovel base 34 is mechanically blocked when it moves to the edge of the threaded hole 33a, thus limiting the maximum stroke. The inclined surface 342a1 of the shovel base 34 is the inclined surface that contacts the slider structure 35. The linear motion of the shovel base 34 is converted into the lateral movement of the slider structure 35 through inclined surface transmission. The sliding connection between the slider structure 35 and the movable groove 2a means that the slider 351 is embedded in the movable groove 2a and guided by a T-slot or dovetail groove structure, ensuring that the slider 351 moves along a predetermined trajectory.

[0018] Specifically, during mold opening, the front template 1 moves away from the fixed plate assembly 2, and the pull rod 31, driven by the elastic element 32, moves the shovel base 34 away from the front template 1. When the distance between the front template 1 and the fixed plate assembly 2 reaches L1, where L1 is the stroke required for the shallow undercut slider 351 to demold, please refer to... Figure 3The deformation of the elastic element 32 by the pull rod 31 is relatively small, and the slider structure 35 can move within the movable groove 2a and slide on the inclined surface 342a1, thereby causing the slider structure 35 of the shallow undercut slider 351 to drive the connected part of the mold a structure to detach from the product; then the front template 1 continues to move away from the fixed plate assembly 2 until the distance between the front template 1 and the fixed plate assembly 2 reaches L2, where L2 is the stroke required for the deep undercut slider 351 to be demolded, and obviously L2 > L1; please refer to Figure 4 During the process of the distance between the front template 1 and the fixed plate assembly 2 increasing from L1 to L2, the deep undercut slider 351 continues to move along with the front template 1. When the stroke of the shallow undercut slider 351 reaches L1, the shovel base 34 is limited by the limiting block 33 and cannot move upward. Therefore, the shallow undercut slider 351 stops moving under the combined limitation of the inclined surface 342a1 of the shovel base 34 and the groove wall of the movable groove 2a of the fixed plate assembly 2. At this time, the elastic element 32 is compressed. Until the distance between the front template 1 and the fixed plate assembly 2 reaches L2, the slider structure 35 of the deep undercut slider 351 will drive the part of the mold a structure connected to it to detach from the product, thereby completing the demolding of the entire product. Since all slider structures 35 do not detach from the movable groove 2a during demolding, the slider structure 35 can accurately return to its original position under the limitation of the inclined surface 342a1 and the groove wall of the movable groove 2a, thereby reducing the probability of mold collision during mold closing.

[0019] The split-type shovel base 34 and independent limiting structure allow each slider 351 to autonomously adjust its stroke according to the undercut depth. In the prior art, the shallow undercut slider 351 suffers from insufficient guidance due to forced long stroke movement. This solution limits its stroke through a mechanical stop with a threaded hole 33a, maintaining a reasonable ratio between the guide length and the core-pulling distance. This avoids tilting and positioning deviation problems caused by excessive stroke of the slider 351. By controlling the sliding distance of slider structures 35 with different strokes, the different stroke requirements of multiple sliders in the front mold can be met, effectively reducing the risk of mold collision during mold closing, thereby improving demolding stability and mold life.

[0020] It should be noted that the lengths of L1 and L2 can be adjusted according to the demolding stroke required by different mold parts a during actual production.

[0021] Please refer to Figure 3 and Figure 5 In one embodiment of the present invention, a convex ring 311 is formed at the end of the pull rod 31 away from the shovel base 34, and the outer diameter of the convex ring 311 is larger than the inner diameter of the through hole 1a; the elastic element 32 is provided on the convex ring 311.

[0022] Among them, the convex ring 311 refers to the outer diameter extension structure set at the end of the tie rod 31. Specifically, it can be implemented by using an annular boss or a flange structure. Its outer diameter is configured to be larger than the inner diameter of the through hole 1a, which is used to limit the axial movement range of the tie rod 31 in the through hole 1a.

[0023] Specifically, when mold a opens, the front template 1 moves the pull rod 31 away from the fixed plate assembly 2. At this time, the elastic element 32 is compressed and a reaction force is generated around the through hole 1a. The dimensional difference between the convex ring 311 and the inner wall of the through hole 1a forms a physical limit, preventing the pull rod 31 from retracting excessively. During mold closing, the elastic element 32 releases its stored elastic potential energy to push the pull rod 31 back to its original position. The cooperation between the convex ring 311 and the through hole 1a ensures that the pull rod 31 always moves along the predetermined path. This structure, through the synergistic effect of mechanical limiting and elastic buffering, enables the pull rod 31 to maintain a stable movement trajectory even under conditions of stroke difference.

[0024] The rigid limiting of the convex ring 311 and the flexible buffer of the elastic element 32 form a dual constraint, which not only prevents the tie rod 31 from exceeding its stroke limit, but also compensates for the motion deviation of the multi-slider 351 system, effectively solving the problem of guide instability caused by the stroke difference of the multi-slider 351. The precise dimensional matching between the convex ring 311 and the through hole 1a controls the maximum retraction of the tie rod 31, preventing the elastic element 32 from overload failure; the preload of the elastic element 32 maintains the contact state between components and eliminates motion gaps. The synergistic effect of the two ensures that each slider 351 maintains stable guidance under different strokes, reduces the risk of mold closing impact caused by the tilting of the slider 351, and maintains the overall compactness of mold a without increasing the length of the guide structure.

[0025] Please refer to Figure 3 In one embodiment of the present invention, the front template 1 is formed with a movable hole 1b at one end of the through hole 1a away from the fixed plate assembly 2. The inner diameter of the movable hole 1b is larger than the outer diameter of the convex ring 311. The convex ring 311 and the elastic member 32 are both located in the movable hole 1b.

[0026] Among them, the movable hole 1b refers to the accommodating space set in the front template 1 and connected to the through hole 1a. Specifically, it can be realized by a cylindrical cavity structure, and its axial extension direction coincides with the axis of the through hole 1a.

[0027] Specifically, the movable hole 1b is configured to connect to the end of the through hole 1a away from the fixed plate assembly 2, and its inner diameter is larger than the outer diameter of the convex ring 311, so that the convex ring 311 and the elastic element 32 can be completely accommodated inside the movable hole 1b. When mold a opens, the front template 1 separates from the fixed plate assembly 2, and the pull rod 31 drives the shovel base 34 to move. At this time, the elastic element 32 is compressed in the movable hole 1b. During the mold closing process, the elastic element 32 releases its elastic force to push the pull rod 31 to reset. The axial movement range of the convex ring 311 in the movable hole 1b is limited by the depth of the movable hole 1b. This structure ensures the stability of the movement trajectory of the pull rod 31 by limiting the elastic element 32 and the convex ring 311 through the movable hole 1b.

[0028] The closed-loop structure of the movable hole 1b prevents the elastic element 32 from being contaminated by external factors or mechanical interference. At the same time, the dimensional fit between the inner diameter of the movable hole 1b and the outer diameter of the convex ring 311 allows for precise control of the compression stroke of the elastic element 32, avoiding plastic deformation caused by excessive compression of the elastic element 32. This provides reliable protection for the working state of the elastic element 32, ensures the accuracy of the resetting action of the pull rod 31, and avoids positioning deviation of the slider structure 35 and mold closing impact problems caused by failure of the elastic element 32, thereby improving the stability of continuous operation of mold a.

[0029] Please refer to Figure 3 , Figure 4 , Figure 5 as well as Figure 6 In one embodiment of the present invention, the shovel base 34 includes a sliding section 341 and an abutting section 342 connected to each other. The abutting section 342 is located at the end of the sliding section 341 away from the front template 1. The sliding section 341 is slidably connected to the inner peripheral wall of the threaded hole 33a. The outer diameter of the abutting section 342 is larger than the inner diameter of the threaded hole 33a, so that it is stopped by the periphery of the threaded hole 33a.

[0030] The sliding section 341 refers to the structure that forms a sliding fit with the inner peripheral wall of the threaded hole 33a. It can be made of a polished metal material to ensure smooth axial movement. The abutting section 342 is a boss located at the end of the sliding section 341 with an enlarged outer diameter. It can be an integrally formed stepped structure with the sliding section 341, with an outer diameter larger than the inner diameter of the threaded hole 33a, forming a mechanical stop. The peripheral stop of the threaded hole 33a refers to the annular protrusion formed by the edge of the through hole 351a on the fixed plate assembly 2. It can be a stepped structure formed by milling, and the contact between the abutting section 342 and the step restricts the axial displacement of the shovel base 34.

[0031] Specifically, when the mold opening action occurs, the front template 1 drives the tie rod 31 to move the shovel base 34 away from the fixed plate assembly 2. The sliding section 341 slides axially along the inner wall of the threaded hole 33a until the annular boss of the abutment section 342 contacts the peripheral step of the threaded hole 33a. At this time, the shovel base 34 reaches the L1 stroke, and the slider structure 35 of the shallow undercut slider 351 stops moving. This effectively prevents the slider structure 35 from tilting due to insufficient guide length during the core pulling process, eliminates the risk of mold collision caused by the positioning deviation of the slider structure 35 during mold closing, and avoids mechanical wear caused by over-stroke, thereby improving the running stability and service life of mold a.

[0032] Please refer to Figure 3 , Figure 4 , Figure 5 as well as Figure 6 In one embodiment of the present invention, the abutment section 342 is provided with a sliding groove 342a, and the inclined surface 342a1 is the bottom wall of the sliding groove 342a; the slider structure 35 is slidably connected in the sliding groove 342a; the sliding groove 342a cooperates with the movable groove 2a to limit the slider structure 35.

[0033] The sliding groove 342a refers to a groove structure set on the surface of the abutment section 342. It can be formed by milling on a metal block using machining methods, and its depth and width are designed according to the movement trajectory of the slider 351. This structure limits the movement path of the slider 351, preventing lateral displacement of the slider 351 during the core-pulling process. The sliding connection refers to a linear contact relationship between the slider 351 and the sliding groove 342a, which can be achieved using a dovetail groove fit or a T-shaped guide rail structure. This connection method ensures freedom of movement while restricting the displacement of the slider 351 in the direction perpendicular to the movement. The mating limit refers to a spatial constraint relationship between the sliding groove 342a and the movable groove 2a, which can be achieved by adjusting the length of the sliding groove 342a and the position of the movable groove 2a. This mating relationship ensures that the slider 351 maintains an effective guiding length at its maximum stroke position, preventing it from disengaging from the guide groove.

[0034] Specifically, when the mold opening action occurs, the front mold plate 1 drives the shovel base 34 to move backward, and the inclined surface 342a1 of the sliding groove 342a pushes the slider 351 to slide outward along the movable groove 2a. The groove wall of the sliding groove 342a forms a double-sided guide for the slider 351, and the end of the movable groove 2a serves as a limit stop at the end of the stroke.

[0035] The coordinated limiting mechanism of sliding groove 342a and movable groove 2a effectively solves the problem of guide failure in multi-undercut mold a. The cooperating limiting mechanism of sliding groove 342a and movable groove 2a ensures that each slider 351 maintains effective guidance during the core pulling process, eliminates the risk of slider 351 tilting, ensures that all sliders 351 accurately reset when the mold is closed, and avoids mold collision accidents.

[0036] Please refer to Figure 3 , Figure 5 as well as Figure 6 In one embodiment of the present invention, the slider structure 35 has a sliding part 3511 protruding at one end near the front template 1, and a limiting groove 342a2 is formed on the peripheral wall of the sliding groove 342a, and the sliding part 3511 is slidably limited in the limiting groove 342a2.

[0037] The sliding part 3511 refers to the protruding structure formed near the end of the front template 1 of the slider structure 35. Specifically, it can be a metal block with a trapezoidal or rectangular cross-section integrally machined with the slider 351 body, used to form a sliding fit with the limiting groove 342a2. The limiting groove 342a2 refers to the groove structure opened on the peripheral wall of the sliding groove 342a, which can be formed by wire cutting or milling. Its depth matches the height of the sliding part 3511, used to limit the movement trajectory of the sliding part 3511 within the sliding groove 342a.

[0038] Specifically, after the sliding part 3511 is embedded in the limiting groove 342a2, when the slider structure 35 moves within the sliding groove 342a, the sliding part 3511 contacts the side wall of the limiting groove 342a2, forming a lateral constraint. When the shovel base 34 drives the slider structure 35 to slide along the inclined surface 342a1, the movement path of the sliding part 3511 within the limiting groove 342a2 is restricted to a single direction, preventing the slider structure 35 from laterally shifting within the movable groove 2a. This constraint ensures that the sliding direction of the slider structure 35 remains parallel to the axis of the guide groove, preventing the risk of tilting due to insufficient guide length.

[0039] The rigid contact between the sliding part 3511 and the limiting groove 342a2 transforms the clearance fit into a surface contact constraint, significantly improving the guiding accuracy. This effectively prevents the slider structure 35 from shifting or tilting laterally during the long-stroke core pulling process, ensuring the positioning accuracy of the slider 351 with the guide groove when it returns to its original position. This avoids impact problems caused by positional deviations during mold closing. At the same time, the cooperation structure between the sliding part 3511 and the limiting groove 342a2 further enhances the stability of the slider 351's movement trajectory.

[0040] Please refer to Figure 3 and Figure 4 The inner diameter of the movable groove 2a is greater than or equal to the outer diameter of the abutment section 342.

[0041] Specifically, when the inner diameter of the movable groove 2a is set to be greater than or equal to the outer diameter of the abutment section 342, the abutment section 342 can completely enter the interior of the movable groove 2a. When the demolding assembly drives the shovel base 34 to move away from the front template 1, a clearance fit or transition fit is formed between the outer peripheral wall of the abutment section 342 and the inner peripheral wall of the movable groove 2a, so that the shovel base 34 will not be rigidly interfered with by the movable groove 2a during the movement.

[0042] By adjusting the dimensional relationship between the movable groove 2a and the abutment section 342, the motion freedom of the shovel base 34 is decoupled from the motion path of the slider structure 35, avoiding the situation where the other sliders 351 are forced to move due to the long stroke required by a single slider 351. This allows the shovel base 34 to move freely in the movable groove 2a without spatial restrictions.

[0043] Please refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 5 In one embodiment of the present invention, the slider structure 35 includes a slider 351 and a pin 352. The slider 351 has a through hole 351a, and the pin 352 passes through the through hole 351a to connect to the mold a.

[0044] The slider 351 is a sliding component with a through hole 351a, which can be formed by machining metal. The through hole 351a is used to accommodate the insert pin 352 and achieves a guiding function through sliding engagement. The insert pin 352 is a rod-shaped component connected to the mold a, which can be made of a high-hardness alloy material. After passing through the through hole 351a of the slider 351, it is fixed to the mold a and is used to transmit motion and ensure the precise engagement between the slider 351 and the mold a.

[0045] Specifically, the slider 351 slides into contact with the insert pin 352 through a through hole 351a, and the insert pin 352 is fixedly connected to the mold a after passing through the through hole 351a. When the spade base 34 moves along the inclined surface 342a1, the protrusion 3521 of the insert pin 352 slides into contact with the inclined surface 342a1, pushing the slider 351 to move along a preset path within the movable groove 2a. The size of the through hole 351a matches the outer diameter of the insert pin 352, ensuring the guiding stability of the insert pin 352 during the movement of the slider 351. Through the split slider 351 and insert pin 352 design, the insert pin 352 can be independently replaced or adjusted according to the needs of different molds a, without having to disassemble the entire slider structure 35, thus adapting to the demolding requirements of different undercut depths.

[0046] The separate design of the insert pin 352 and the slider 351 allows different sliders 351 to independently adapt to the corresponding core-pulling stroke, avoiding the problem of insufficient guide length due to stroke differences. The separate structure simplifies the mold maintenance process, improves maintenance efficiency, and reduces the risk of mold collision.

[0047] Please refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 5 In one embodiment of the present invention, a protrusion 3521 is formed at one end of the insert 352 near the shovel base 34. The outer diameter of the protrusion 3521 is larger than that of the through hole 351a, and the protrusion 3521 is slidably connected to the inclined surface 342a1.

[0048] Among them, the protrusion 3521 refers to the outer diameter extension structure of the insert 352 near the shovel base 34. Specifically, it can be formed by turning or forging. Its outer diameter is larger than the inner diameter of the through hole 351a to limit the sliding range of the insert 352 in the through hole 351a. At the same time, it achieves motion synchronization by sliding contact with the inclined surface 342a1.

[0049] Specifically, after the insert pin 352 passes through the through hole 351a of the slider structure 35, the protrusion 3521 at its end forms a sliding contact with the inclined surface 342a1 of the shovel base 34. When the demolding assembly is activated, the pull rod 31 drives the shovel base 34 to move, and the inclined surface 342a1 pushes the protrusion 3521 of the insert pin 352, causing the slider structure 35 to slide along the guide groove direction of the movable groove 2a. Since the outer diameter of the protrusion 3521 is larger than that of the through hole 351a, the insert pin 352 is always radially constrained by the through hole 351a during the sliding process, preventing the slider structure 35 from disengaging from the guide groove due to deviation in the movement trajectory.

[0050] Through the dual cooperation of the protrusion 3521 and the inclined surface 342a1, radial limiting is achieved while driving axially, so that the movement trajectory of the slider structure 35 is always controlled, effectively solving the problem of slider 351 movement instability caused by different undercut depths. The protrusion 3521 of the insert 352 and the inclined surface 342a1 form rigid contact, preventing the slider 351 from tilting during long-stroke core pulling, ensuring that the slider 351 returns to its precise position when the mold is closed, and avoiding the risk of mold collision.

[0051] It is understood that the elastic element 32 can be elastic rubber or a spring. In one embodiment of this utility model, the elastic element 32 is a spring.

[0052] A spring is a component that stores and releases mechanical energy through elastic deformation. Specifically, a helical spring can be used. A helical spring is made of wound metal wire and generates elastic force when compressed or stretched. In the demolding assembly, one end of the spring is installed on the end of the pull rod 31 away from the shovel base 34, and the other end abuts against the periphery of the through hole 1a. It provides a reset driving force through elastic deformation, so that the pull rod 31 drives the shovel base 34 to automatically return to its original position after demolding.

[0053] Specifically, a spring is sleeved on the outside of the pull rod 31, with its two ends contacting the protruding ring 311 at the end of the pull rod 31 and the periphery of the through hole 1a, respectively. When the pull rod 31 is moved away from the shovel base 34 by an external force, the spring is compressed and stores elastic potential energy; when the external force is released, the spring releases its potential energy to push the pull rod 31 back to its original position, thereby causing the shovel base 34 and the slider structure 35 to return to their initial positions. During this process, the elastic force of the spring can adjust the travel of the pull rod 31, ensuring the sliding fit accuracy between the shovel base 34 and the limiting block 33.

[0054] The spring provides a stable driving force through the elastic properties of the metal material, without the need for external energy, and has a longer service life and higher reliability. It is especially suitable for the working conditions in precision mold a that require frequent demolding, thereby solving the problem of slider 351 resetting deviation caused by the instability of elastic element 32, reducing the risk of collision between slider 351 and mold a during mold closing, and simplifying the structure of the demolding component, thereby improving the consistency of mold a's movement and service life.

[0055] Please refer to Figure 2 , Figure 3 as well as Figure 4 In one embodiment of the present invention, the fixed plate assembly 2 includes a fixed side template 21 and a front mold core 22. The front mold core 22 is disposed on the fixed side template 21, and the mold a is accommodated in the front mold core 22. The front mold core 22 and the fixed side template 21 enclose each other to form a movable groove 2a.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope 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 patent protection scope of the present utility model.

Claims

1. A slider shovel base mechanism, characterized in that, include: Front template, wherein the front template has through holes; A fixed plate assembly, wherein the front template is movably connected to the fixed plate assembly to move closer to or further away from the fixed plate assembly, and the fixed plate assembly has a movable slot; and A demolding assembly includes a pull rod, an elastic element, a limiting block, a shovel base, and a slider structure. The pull rod passes through the through hole and is connected to the shovel base. One end of the elastic element is located at the end of the pull rod away from the shovel base, and the other end abuts against the periphery of the through hole on the side opposite to the shovel base. The limiting block is located on the fixing plate assembly and has screw holes for fixing to the fixing plate assembly. The shovel base is slidably connected to the limiting block, and a portion of the shovel base is blocked and limited by the periphery of the limiting block. The shovel base has an inclined surface opposite to the front template. The slider structure is slidably connected to the peripheral wall of the movable groove and slidably abuts against the inclined surface. The slider structure is configured to connect to the mold.

2. The slider shovel base mechanism as described in claim 1, characterized in that, The end of the pull rod away from the shovel base has a convex ring, the outer diameter of which is larger than the inner diameter of the through hole; the elastic element is provided on the convex ring.

3. The slider shovel base mechanism as described in claim 2, characterized in that, The front template has a movable hole that connects to the end of the through hole away from the fixed plate assembly. The inner diameter of the movable hole is larger than the outer diameter of the convex ring. Both the convex ring and the elastic element are located inside the movable hole.

4. The slider shovel base mechanism as described in claim 1, characterized in that, The shovel base includes a sliding section and an abutting section connected together. The abutting section is located at the end of the sliding section away from the front template. The sliding section is slidably connected to the inner peripheral wall of the screw hole. The outer diameter of the abutting section is larger than the inner diameter of the screw hole so as to be stopped by the periphery of the screw hole.

5. The slider shovel base mechanism as described in claim 4, characterized in that, The abutting section is provided with a sliding groove, and the inclined surface is the bottom wall of the sliding groove; the slider structure is slidably connected in the sliding groove; the sliding groove and the movable groove cooperate to limit the slider structure.

6. The slider shovel base mechanism as described in claim 5, characterized in that, The slider structure has a protruding sliding part at one end near the front template, and a limiting groove is formed on the peripheral wall of the sliding groove, so that the sliding part is limited to sliding within the limiting groove.

7. The slider shovel base mechanism as described in claim 5, characterized in that, The inner diameter of the movable groove is greater than or equal to the outer diameter of the abutment section.

8. The slider shovel base mechanism as described in claim 1, characterized in that, The slider structure includes a slider and a pin, the slider having a through hole through which the pin passes to connect to the mold.

9. The slider shovel base mechanism as described in claim 8, characterized in that, The insert has a protrusion at one end near the shovel base. The outer diameter of the protrusion is larger than the through hole, and the protrusion is slidably connected to the inclined surface.

10. The slider shovel base mechanism as described in any one of claims 1 to 9, characterized in that, The elastic element is a spring.

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