Injection mold with protection function and injection equipment

Abstract

The utility model relates to the technical field of automobile parts production, provide a kind of injection mould and injection equipment with protection function, injection mould includes template component and protection structure, template component includes first template and second template, and the first template and second template are formed with the cavity for shaping soft rubber product between, second template is movable relative to first template, to have mold closed state and open mold state;Protection structure is arranged corresponding cavity, and protection structure includes flexible protection piece, one end of flexible protection piece is connected to first template, other end is connected to second template, flexible protection piece can be stretched or folded with the movement of second template, dynamic covers cavity, effectively prevent foreign matter from entering or material overflow;Flexible design adapts second template movement process, and give consideration to protective property and movement coordination, improve the protection reliability of cavity area.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to an injection mold and injection equipment with protective function. Background Technology

[0002] In the production of automotive parts, traditional rigid protective structures are typically used to protect the mold cavity during the opening and closing of injection molds.

[0003] However, during the production process, the above-mentioned injection molds have the following problems: On the one hand, the rigid protective structure design cannot adapt to the dynamic displacement when the mold is opened and closed, and is very prone to mechanical interference with the moving template, resulting in the failure of the protective function; on the other hand, the above-mentioned protective structure is difficult to ensure the protection of the mold cavity while taking into account the smoothness of the mold movement, often causing friction and wear between the protective parts and the mold, and even causing damage to the mold surface, which seriously affects the quality stability of the injection molded products and the service life of the mold. Utility Model Content

[0004] This utility model provides an injection mold with protective function to solve the problems in related technologies where traditional protective structures are unable to adapt to the dynamic displacement of the mold, which easily leads to motion interference failure, and it is difficult to balance protection and motion coordination, resulting in mold wear and damage, affecting product quality and mold life.

[0005] This utility model provides an injection mold with protective function, comprising:

[0006] The template assembly includes a first template and a second template, a mold cavity for molding soft rubber products is formed between the first template and the second template, and the second template is movable relative to the first template to have a closed mold state and a closed mold state;

[0007] The protective structure corresponds to the mold cavity arrangement. The protective structure includes a flexible protective component. One end of the flexible protective component is connected to the first template, and the other end is connected to the second template. The flexible protective component can extend or retract as the second template moves.

[0008] According to the present invention, an injection mold with protective function is provided, wherein the flexible protective component is a flexible plate.

[0009] The flexible plate can be bent and deformed in the regions away from its two ends.

[0010] According to the present invention, an injection mold with protective function is provided, wherein one end of the flexible protective member is detachably connected to the first template and the other end of the flexible protective member is detachably connected to the second template.

[0011] According to the present invention, an injection mold with protective function is provided. The injection mold further includes a driving mechanism, which is disposed between the first template and the second template. The power output end of the driving mechanism is connected to the second template for transmission, so as to drive the second template to move relative to the first template.

[0012] According to the present invention, a protective injection mold is provided, wherein the flexible protective components are respectively provided on the opposite side walls of the driving mechanism along the moving direction perpendicular to the second template.

[0013] According to the present invention, an injection mold with protective function is provided, the protective structure further includes a protective baffle, the protective baffle is connected to the first template, and the protective baffle covers the driving mechanism.

[0014] According to the present invention, an injection mold with protective function is provided, wherein the protective baffle and the flexible protective component are arranged sequentially along the moving direction perpendicular to the second template.

[0015] According to the present invention, there are two second templates, and the first template is located between the two second templates.

[0016] Both of the second templates are drive-connected to the power output end of the drive mechanism.

[0017] According to the present invention, an injection mold with protective function is provided, the driving mechanism comprising:

[0018] A drive motor is located on the first template;

[0019] A drive gear, which is connected to the output shaft of the drive motor in a transmission manner;

[0020] Two transmission racks are provided, each corresponding to and fixedly connected to one of the two second templates. One of the transmission racks is engaged with one side of the drive gear, and the other transmission rack is engaged with the opposite side of the drive gear.

[0021] This utility model also provides an injection molding device, including the above-mentioned injection mold with protective function.

[0022] The protective injection mold provided by this utility model connects the first template and the second template through a flexible protective component, which is arranged in accordance with the mold cavity. It can automatically extend or retract as the second template moves, dynamically covering the mold cavity and effectively preventing foreign objects from entering or materials from overflowing. The flexible design adapts to the movement process of the second template, taking into account both protection and movement coordination, and improving the protection reliability of the mold cavity area. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of the soft rubber product provided by this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the injection mold provided by this utility model.

[0026] Figure 3 This is a schematic diagram of the internal structure of the injection mold provided by this utility model.

[0027] Figure 4 This is a simplified schematic diagram of the mold closing state of the injection mold provided by this utility model.

[0028] Figure 5 This is a simplified structural diagram of the injection mold provided by this utility model, showing the process from the mold opening state to the second demolding position.

[0029] Figure 6 This is a partial structural diagram of the first and second templates of the injection mold provided by this utility model.

[0030] Figure 7 This is a schematic diagram of the drive mechanism of the injection mold provided by this utility model.

[0031] Figure 8 This is a schematic diagram of the insert structure and ejection structure of the injection mold provided by this utility model.

[0032] Figure 9 This is a structural schematic diagram of the soft rubber product, insert, and ejector pin of the injection mold provided by this utility model.

[0033] Figure 10 This is a schematic diagram of the insert structure of the injection mold provided by this utility model.

[0034] Figure 11 This is a schematic diagram of the ejector pin sleeve of the injection mold provided by this utility model.

[0035] Figure 12 This is a simplified structural diagram of the soft rubber product, insert, and ejector pin in the closed state of the injection mold provided by this utility model.

[0036] Figure 13This is a simplified structural diagram of the soft rubber product, insert, and ejector pin ejected from the mold opening state to the first demolding position provided by the present invention.

[0037] Figure 14 This is a simplified structural diagram of the soft rubber product, insert, and ejector pin ejected from the mold opening state to the second demolding position provided by this utility model.

[0038] Figure 15 This is a simplified structural diagram showing the relative positions of the first and second gas channels in the mold-closed state of the injection mold provided by this utility model.

[0039] Figure 16 This is a simplified structural diagram showing the relative positions of the first and second gas channels in the open state of the injection mold provided by this utility model.

[0040] Figure label:

[0041] 100. First template; 110. First guide rail section; 200. Second template; 210. Moving chamber; 220. First mounting section;

[0042] 300. Insert structure; 310. Insert sleeve; 311. First linkage part; 320. Panel;

[0043] 400. Ejector structure; 410. Ejector pin; 411. Abutting boss; 420. Ejector plate; 421. First limiting part;

[0044] 500. Drive mechanism; 510. Drive motor; 520. Drive gear; 530. Transmission rack; 531. Second guide rail; 532. Second mounting part; 540. Position sensor;

[0045] 600, Pull rod; 610, Second limiting part; 710, First connecting piece; 720, Second connecting piece; 800, Air blowing structure;

[0046] A. Soft rubber body; A1. Inner ring; A11. Second linkage part; A2. Outer ring; A21. Inverted part;

[0047] 810, First gas passage; 811, Air guide hole; 812, First air inlet concave surface; 820, Second gas passage; 821, Air guide groove; 822, Second air inlet concave surface; 910, Flexible protective component; 920, Protective baffle. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0049] It should be noted that, referring to Figure 1 In this embodiment, the soft rubber product includes a soft rubber body A, which has an inner ring A1 and an outer ring A2 surrounding the inner ring A1.

[0050] The following is combined Figures 1-16 This invention describes an injection mold with protective function and an injection mold.

[0051] Understandably, referring to Figures 2 to 5 In some examples of this utility model, the injection mold with protective function includes a template assembly, an ejection structure 400 and a drive mechanism 500. The template assembly includes a first template 100 and a second template 200. A mold cavity for molding soft rubber products is formed between the first template 100 and the second template 200. The second template 200 is movable relative to the first template 100 so as to have a mold closed state and a mold open state.

[0052] Reference Figures 2 to 5 The second template 200 is movably provided with an insert structure 300, the insert structure 300 at least partially communicates with the mold cavity and is used to form the inner ring A1 of the soft rubber product;

[0053] The ejector structure 400 is movably mounted on the second template 200. The ejector structure 400 cooperates with the insert structure 300, and the cross-sectional area formed by the two is adapted to the inner ring A1 of the soft rubber product.

[0054] In the mold-closed state, both the insert structure 300 and the ejection structure 400 are housed within the second template 200.

[0055] In the mold-opening state, the second mold plate 200 moves relative to the first mold plate 100 to have a first demolding position and a second demolding position;

[0056] At the first demolding position, the outer ring A2 of the soft rubber product is detached from the second template 200. Parts of both the insert structure 300 and the ejector structure 400 extend out of the second template 200 and support the soft rubber product. The ends of the extended parts of the insert structure 300 and the ejector structure 400 are aligned so as to have a first distance relative to the second template 200.

[0057] At the second demolding position, the protruding ends of the insert structure 300 and the ejector structure 400 are such that the insert structure 300 maintains a first distance, and the ejector structure 400 has a second distance from the second template 200. The first distance is less than the second distance, so that the inner ring A1 of the soft rubber product is sequentially separated from the insert structure 300 and the ejector structure 400.

[0058] In this embodiment, it should be noted that the molding surface of the first template 100 and the molding surface of the second template 200 together form a mold cavity. It can be understood that the molding surface is one side of the mold cavity. A movable insert structure 300 is provided on the second template 200. The insert structure 300 not only forms the inner ring A1 of the soft rubber product, but also, when the second template 200 moves, the insert structure 300 and the ejector structure 400 partially extend out of the second template 200, and the end faces of the two extending out are at a distance from the molding surface of the second template 200, so that the outer ring A2 of the soft rubber product detaches from the second template 200 and then detaches from the insert structure 300 and the ejector structure 400.

[0059] Understandably, referring to Figures 12 to 14 In some examples of this utility model, the outer ring A2 of some soft rubber products has a buckle A21. It can be understood that in the traditional process, the buckle A21 of the outer ring A2 of the soft rubber product is usually in contact with the second template 200. Direct ejection is prone to cause the outer ring A2 to get stuck due to sticking to the mold, and then the buckle A21 pulls the inner ring A1 in the opposite direction, causing the inner ring A1 to be punctured.

[0060] To avoid adhesion between the undercut part A21 and the second template 200, the insert structure 300 is provided with a first linkage part 311, and a second linkage part A11 is formed in the inner ring A1 of the soft rubber product through the insert structure 300.

[0061] Correspondingly, it can be understood that the insert structure 300 and the ejector structure 400 support and stabilize the inner ring A1 of the soft rubber product. Through the opening of the second template 200, it initially moves to the first demolding position to demold the outer ring A2 of the soft rubber product first. After demolding, the second template 200 continues to the second demolding position, and then the insert structure 300 and the ejector structure 400 sequentially complete the demolding of the inner ring A1.

[0062] Release the outer ring A2 of the soft rubber product at the first demolding position: First, the second template 200 is extended simultaneously through the insert structure 300 and the two ejection structures 400, maintaining the first distance, and pushing the second template 200 away from the outer ring A2 of the soft rubber product, thereby relieving the sticking resistance between the undercut part A21 of the outer ring A2 and the second template 200, and weakening the indirect binding of the sticking phenomenon on the inner ring A1.

[0063] The second ejection point disperses the pressure on the inner ring A1: Subsequently, the ejector structure 400 moves further away from the forming surface of the second template 200, with the second distance being greater than the first distance. This allows the inner ring A1 to first partially detach from the constraint of the insert structure 300, and then gradually detach from the ejector structure 400. This process transforms the ejection force, which was originally concentrated on the middle of the inner ring A1, into a phased, multi-position progressive force, reducing the local instantaneous stress peak of the inner ring A1 and avoiding stress concentration and ejection failure due to sticking to the mold, thereby improving product yield and assembly reliability.

[0064] Understandably, during injection molding, the second linkage part A11 is simultaneously formed on the inner ring A1 of the soft rubber product through the insert structure 300. Therefore, the second linkage part A11 is formed on the inner ring A1 of the soft rubber product. The first linkage part 311 and the second linkage part A11 are positioned and matched, so that the soft rubber product and the insert structure 300 establish a mechanical fit relationship during the molding stage. This ensures that the product moves synchronously with the insert structure 300 and the ejection structure 400 during ejection, weakens the pulling force of the mold sticking force on the product, and provides an initial separation basis for subsequent demolding.

[0065] It should be noted that in this embodiment, both the insert structure 300 and the ejector structure 400 partially extend out of the second template 200. During the molding process of the soft rubber product, the ends of the insert structure 300 and the ejector structure 400 facing the mold cavity are aligned. Of course, in some embodiments, the ejector structure 400 does not affect the molding of the soft rubber product, and the soft rubber product can be molded solely by the insert structure 300 in conjunction with the mold cavity. Therefore, the ends of the ejector structure 400 and the insert structure 300 facing the mold cavity can also be misaligned during the molding process.

[0066] In this embodiment of the present invention, the first linkage part 311 and the second linkage part A11 are positioned and cooperated. When the second template 200 moves to the first demolding position, the soft rubber product is fixed on the extended ends of the insert structure 300 and the ejection structure 400, providing support and stability for the inner ring A1 of the soft rubber product. During this process, the outer ring A2 is detached from the second template 200 through linkage constraint, and the undercut part A21 is released from the adhesive contact with the second template 200 instead of directly pressing the inner ring A1. This effectively solves the problem of the undercut part A21 of the outer ring A2 sticking to the second template 200, eliminates its binding on the inner ring A1, avoids local stress concentration caused by the outer ring A2 being stuck, and reduces the risk of the inner ring A1 being punctured.

[0067] As the second template 200 continues to move to the second demolding position, the misaligned ejector end causes the inner ring A1 to first separate from the insert structure 300, and then from the first linkage part 311 and the second linkage part A11, releasing some constraints first, and then separating from the ejector structure 400 to release the remaining constraints. This process transforms the force originally concentrated on the middle of the inner ring A1 into a phased and gradual force, resulting in a stable demolding process for soft rubber products without displacement, tearing, or sticking. The inner ring A1 is free from structural damage such as punctures, improving product yield (especially for thin-walled, complex undercut soft rubber parts) and significantly enhancing assembly reliability (such as the fitting accuracy with other parts).

[0068] Understandably, referring to Figure 4 and Figure 5 In some embodiments of this utility model, the insert structure 300 and the ejector structure 400 are movably connected.

[0069] In the mold-closed state, there is a first moving distance between the insert structure 300 and the ejector structure 400, and a second moving distance between the insert structure 300 and the second template 200.

[0070] The second moving distance is smaller than the first moving distance;

[0071] During the mold opening process, the second template 200 moves in the direction of reducing the second moving distance until it pushes against the insert structure 300, and the second template 200 is in the first demolding position;

[0072] During the process of switching from the first demolding position to the second demolding position, the insert structure 300 and the ejector structure 400 move relative to each other until they come into contact, and the second template 200 is in the second demolding position.

[0073] It is understood that the direction of movement is either the mold closing or mold opening direction; in this embodiment, the direction of movement is left and right.

[0074] With the above arrangement, since the second moving distance is smaller than the first moving distance, the movement of the mold plate during mold opening will preferentially trigger the action of the insert structure 300, forming a hierarchical secondary ejection logic of "insert structure 300 ejects first, then insert structure 300 and ejection structure 400 are ejected in a staggered manner":

[0075] In the first demolding position, the ejection force is transmitted through the insert structure 300, specifically addressing the sticking problem between the undercut A21 of the outer ring A2 of the soft rubber product and the second template 200. Due to the small second moving distance, the displacement of the second template 200 first compresses this distance, pushing the insert structure 300 to move along the moving direction. At this time, the ejection structure 400 and the insert structure 300 still retain the complete first moving distance, and the ejection structure 400 does not participate in the ejection action.

[0076] The second template 200 moves further, reducing the first moving distance until the insert structure 300 and the ejection structure 400 come into contact. At this time, the extended parts of the insert structure 300 and the ejection structure 400 are misaligned, causing the inner ring A1 of the soft rubber product to first detach from the insert structure 300 and then from the ejection structure 400, realizing the gradual ejection of the inner ring A1, dispersing the ejection stress of the soft rubber inner ring A1, and reducing the risk of structural damage. The timing control of the outer ring A2 detaching from the inner ring A1 ejection (outer first, then inner, step-by-step action), combined with the characteristics of the soft rubber material, effectively avoids defects such as punching through, and significantly improves product yield and assembly reliability.

[0077] Understandably, referring to Figure 4 and Figure 5 In some embodiments of this utility model, the insert structure 300 includes a sleeve 310, the ejector structure 400 includes an ejector pin 410, the sleeve 310 is sleeved on the ejector pin 410, and the two are relatively movable. The ejector pin 410 and the sleeve 310 are used to cooperate with the inner ring A1 of the soft rubber product.

[0078] Reference Figure 13 At the first demolding position, the ends of the ejector pin 410 and the insert 310 are aligned;

[0079] Reference Figure 14 At the second demolding position, part of the ejector pin 410 extends out of the insert 310.

[0080] With the above structure, the insert 310 is fitted onto the ejector pin 410, and both fit tightly with the inner ring A1 of the soft rubber product, ensuring that the inner ring A1 is not damaged during demolding. The ends of the ejector pin 410 and the insert 310 are aligned to ensure uniform force during the initial demolding stage, preventing deformation of the inner ring A1 due to uneven force. Part of the ejector pin 410 extends out of the insert 310. By moving the second template 200, the ejector pin 410 is misaligned with the end of the insert 310, thereby achieving the ejection action and further pushing the inner ring A1 of the soft rubber product away from the insert 310, achieving smooth demolding.

[0081] Reference Figure 4 , Figure 5 as well as Figure 8 In some embodiments of this utility model, the insert structure 300 further includes an insert plate 320, the ejection structure 400 further includes an ejection plate 420, and the second template 200 is provided with a movable chamber 210.

[0082] The insert 310 is fixedly connected to the insert plate 320, and the ejector pin 410 is fixedly connected to the ejector plate 420;

[0083] Both the panel 320 and the ejector plate 420 are located within the movable chamber 210, and the panel 320 and the ejector plate 420 are movably connected.

[0084] With the above configuration, the relative positions of the insert 320 and the ejector plate 420 with respect to the second template 200 change due to the movement of the second template 200 relative to the first template 100. First, the insert 310 guides the inner ring A1 of the soft rubber product to initially detach, and then the ejector pin 410 completes the final ejection, reducing the risk of deformation of the inner ring A1. In addition, the movable chamber 210 provides stable guidance and movement space, ensuring a smooth and controllable demolding process, improving mold life and product quality. The ejector plate 420 and the insert 320 are housed in the movable chamber 210 of the second template 200, which can make full use of the thickness of the second template 200, thereby reducing the overall thickness of the injection mold.

[0085] Understandably, referring to Figures 3 to 5 as well as Figure 8 In some embodiments of this utility model, the injection mold further includes a tie rod 600, one end of which is fixedly connected to the first template 100, and the other end is sequentially and movably inserted into the second template 200, the insert structure 300 and the ejection structure 400.

[0086] Among them, the tie rod 600 is matched with the ejector structure 400 for limiting.

[0087] With the above configuration, when the second template 200 opens and moves, the tie rod 600 engages with the ejector structure 400 to limit its movement, allowing the ejector structure 400 and the insert structure 300 to move towards each other until they abut. During the mold opening process, the ejection of the soft rubber product can be completed simultaneously. This not only allows the ejection speed to be controlled by the mold opening speed to meet product requirements but also saves the extra time required for ejection. Furthermore, the tie rod 600 eliminates the need for a separate hydraulic cylinder to drive the ejector structure 400 and the insert structure 300, thus reducing the thickness of the injection mold.

[0088] Reference Figures 3 to 5 as well as Figure 8 In some embodiments of this utility model, the ejector structure 400 is provided with a first limiting part 421, and the pull rod 600 is provided with a second limiting part 610. The first limiting part 421 is a limiting groove, and the second limiting part 610 is a limiting protrusion.

[0089] More specifically, in some embodiments of this utility model, the ejector plate 420 is provided with a limiting groove, which is engaged with the limiting protrusion to limit the movement of the ejector pin 410 or the insert 310, prevent excessive movement, and improve the stability and safety of the demolding process.

[0090] Understandably, referring to Figures 3 to 5 as well as Figure 8In some embodiments of this utility model, the injection mold further includes a first connector 710 and a second connector 720. One end of the first connector 710 is fixedly connected to the insert plate 320 of the insert structure 300, and the other end of the first connector 710 is movably connected to the ejector plate 420 of the ejector structure 400.

[0091] One end of the second connector 720 is movably inserted through the second template 200, and the other end of the second connector 720 is fixedly connected to the ejector plate 420 of the ejector structure 400.

[0092] The first connecting member 710 is in a limiting fit with the ejector plate 420 of the ejector structure 400.

[0093] Through the above settings, the first connector 710 controls the first moving distance, and the second connector 720 controls the second moving distance, strictly limiting the stroke to ensure that the ejector pin 410 is aligned with the end of the insert 310 at the first demolding position, and the outer ring A2 is disengaged from the second template 200. At the second demolding position, the ejector pin 410 extends out of the insert 310, and the inner ring A1 disengages in stages, accurately matching the displacement required for the demolding of the inner and outer rings A2, thus improving demolding stability.

[0094] Specifically, refer to Figures 3 to 5 as well as Figure 8 In this embodiment, the first connector 710 is a first connecting rod, one end of which is formed with a first positioning protrusion, and the ejector plate 420 is provided with a first positioning groove. When the first positioning protrusion engages with the first positioning groove, the maximum distance between the insert plate 320 and the ejector plate 420, i.e., the first moving distance, can be limited.

[0095] The second connecting member 720 is a second connecting rod. One end of the second connecting rod is fixedly connected to the top plate 420, such as by snap-fit, screw-fit, or welding. The first and second moving distances are controlled by setting the first and second connecting rods.

[0096] Understandably, referring to Figures 9 to 11 as well as Figure 15 and Figure 16 In some examples of this utility model, an air blowing structure 800 is provided between the insert structure 300 and the ejector structure 400. At the second demolding position, the air blowing structure 800 can guide gas to the inner ring A1 of the soft rubber product so that the soft rubber product is detached from the ejector structure 400.

[0097] Specifically, an air blowing structure 800 is formed in a portion of both the sleeve 310 and the ejector pin 410. Of course, in other examples, the air blowing structure 800 can also be arranged independently outside the sleeve 310 and the ejector pin 410.

[0098] With the air blowing structure 800, when in the second demolding position, in order to prevent the soft rubber product from sticking to the ejector pin 410, the air blowing structure 800 delivers gas to the soft rubber product to blow air into it. The gas quickly intervenes to assist separation, shortens the demolding time, and further improves the demolding efficiency. At the same time, it can also reduce the ejection force required for demolding, save equipment energy consumption, and extend the mold life.

[0099] Understandably, referring to Figures 9 to 11 , Figure 15 and Figure 16 In some examples of this utility model, the blowing structure 800 includes a first gas channel 810 and a second gas channel 820. The first gas channel 810 is disposed in the sleeve 310 of the insert structure 300 and is used to introduce gas.

[0100] The second gas channel 820 is provided on the ejector pin 410 of the ejector structure 400, and the inlet end of the second gas channel 820 is connected to the outlet end of the first gas channel 810.

[0101] At the first demolding position, the insert structure 300 is sealed to the outlet end of the first gas channel 810 to close the outlet end of the second gas channel 820.

[0102] At the second demolding position, the insert structure 300 avoids the outlet end of the second gas channel 820 to open the outlet end of the second gas channel 820.

[0103] With the above structure, the second gas channel 820 is closed at the first demolding position to reduce gas waste, accurately control the airflow direction, and avoid premature blowing into the inner ring A1, which may cause deformation or overflow of the soft rubber. At the second demolding position, the gas is input from the inlet end of the first gas channel 810 to the second gas channel 820 and output through the outlet end of the second gas channel 820, which specifically blows away the inner ring A1 of the soft rubber product, thereby improving demolding efficiency.

[0104] By controlling the relative positions of the ejector pin 410 of the ejector structure 400 and the insert 310 of the insert structure 300, the opening and closing of the second gas channel 820 can be controlled, thereby achieving precise control of the timing of gas blowing.

[0105] Specifically, refer to Figure 9 , Figure 10 , Figure 15 and Figure 16 In this embodiment, the first gas channel 810 includes a gas guide hole 811 and a first gas inlet concave surface 812. The gas guide hole 811 is formed on the sleeve 310 radially, and the first gas inlet concave surface 812 is formed on the outer side wall of the sleeve 310 axially. One end of the gas guide hole 811 is connected to the first gas inlet concave surface 812, and the other end is connected to the second gas channel 820.

[0106] With the above structure, the first inlet concave surface 812 expands the gas inlet area, reduces the flow velocity impact when the gas enters, and allows the airflow to enter the guide hole 811 more smoothly. The guide hole 811 serves as a directional channel for gas output, thereby delivering the gas to the second gas channel 820, avoiding airflow dispersion and improving the blowing demolding efficiency.

[0107] More specifically, in this embodiment, the air vent 811 penetrates the opposite side walls of the sleeve 310.

[0108] Gas can be delivered from the opposite side walls of the sleeve 310 to the second gas channel 820, reducing the ventilation pressure and simplifying the structural design of the sleeve 310.

[0109] Of course, in some examples, the first gas channel 810 described above can also be a combination of a gas guide recess and a first gas inlet recess 812, as long as gas delivery can be achieved.

[0110] Specifically, refer to Figure 9 , Figure 11 , Figure 15 and Figure 16 In this embodiment, the ejector pin 410 is provided with an abutment boss 411; the second gas channel 820 includes a gas guide groove 821 and a second gas inlet concave surface 822. The gas guide groove 821 is located between the second gas inlet concave surface 822 and the abutment boss 411. Both the gas guide groove 821 and the second gas inlet concave surface 822 are formed along the axial direction of the ejector pin 410 on the outer side wall of the ejector pin 410; one end of the second gas inlet concave surface 822 is connected to the gas guide hole 811, and the other end is connected to the gas guide groove 821; in the first demolding position, the abutment boss 411 abuts against the inner wall of the insert 310 to close the gas outlet end of the blowing structure 800; in the second demolding position, the abutment boss 411 moves to separate from the inner wall of the insert 310, and the gas guide groove 821 is at least partially located outside the insert 310 to open the gas outlet end of the blowing structure 800.

[0111] With the above configuration, the abutting boss 411 abuts against the inner wall of the insert 310 at the first demolding position, sealing the outlet of the second gas channel 820, that is, closing the connection between the air guide groove 821 and the soft rubber product; at the second demolding position, the abutting boss 411 separates, and the air guide groove 821 is exposed outside the insert 310 and blows directly onto the inner ring A1 of the soft rubber product to achieve air blowing and avoid airflow interference; the air guide groove 821 directs the flow, reduces airflow dispersion and pressure loss, and ensures that the airflow at the second demolding position is concentrated on the inner ring A1, improving demolding efficiency; and the air guide groove 821 and the second air inlet concave surface 822 are arranged axially, and the relative movement of the ejector structure 400 and the second template 200 is used to open and close them, without the need for additional drive, simplifying the structure and providing a fast response.

[0112] Understandably, referring to Figure 2 , Figure 3 as well as Figure 6 and Figure 7 In some examples of this utility model, the power output end of the drive mechanism 500 is connected to the second template 200 in a transmission connection to drive the second template 200 to move relative to the first template 100.

[0113] The second template 200 can be moved directly by the drive mechanism 500 (such as a hydraulic cylinder, air cylinder, servo motor, etc.), which can precisely control its displacement relative to the first template 100, ensuring the accuracy of mold opening and closing or product forming.

[0114] In some examples of this utility model, there are two second templates 200, and the first template 100 is located between the two second templates 200;

[0115] Both second templates 200 are connected to the power output end of the drive mechanism 500.

[0116] The above arrangement results in a layered mold structure for the injection mold. Both second mold plates 200 are driven synchronously by the same drive mechanism 500, ensuring that the movements on both sides are completely consistent and avoiding misalignment or stress concentration due to asynchrony. The symmetrical layout ensures that the mold is subjected to balanced forces, reduces frictional resistance during mold opening, and increases demolding speed. Synchronous drive ensures that the movement trajectories of components such as ejector pins 410 and bushings 310 are consistent.

[0117] In addition, compared with ordinary molds, the injection mold of this utility model has a lower tonnage, can set more cavities, has a lower gate weight, and a shorter production molding cycle due to the setting of two second templates 200 and the movement of the second templates 200, which causes the insert structure 300 and the ejection structure 400 to change their positions relative to the second templates 200.

[0118] Reference Figure 3 and Figure 7 In some examples of this utility model, the drive mechanism 500 includes a drive motor 510, a drive gear 520, and two transmission racks 530. The drive motor 510 is disposed on the first template 100, the drive gear 520 is connected to the output shaft of the drive motor 510, and the two transmission racks 530 are corresponding to and fixedly connected to the two second templates 200. One of the transmission racks 530 is engaged with one side of the drive gear 520, and the other transmission rack 530 is engaged with the opposite side of the drive gear 520.

[0119] Using the above structure, the drive motor 510, through the high-precision transmission of the drive gear 520 and the transmission rack 530, can precisely control the moving distance and speed of the second template 200. At the first demolding position, the drive motor 510 drives the second template 200 to move to the set stroke, such as the second moving distance, triggering the outer ring A2 to disengage; at the second demolding position, the drive motor 510 continues to drive the second template 200 to move, such as reducing the first moving distance, and the synchronous linkage ejection structure 400 completes the step-by-step ejection of the inner ring A1. Through the precise matching of stroke and timing, the seamless connection between the disengagement of the outer ring A2 and the ejection of the inner ring A1 of the soft rubber product is ensured, avoiding the inner ring A1 residue or excessive ejection caused by stroke deviation.

[0120] Two transmission racks 530 mesh on either side of the drive gear 520. When the drive motor 510 rotates, the two transmission racks 530 are driven to move in opposite directions synchronously (e.g., one to the left and the other to the right), causing the corresponding two second mold plates 200 to move synchronously in opposite directions. This design ensures that the two second mold plates 200 move completely synchronously during mold opening or ejection, avoiding mold offset or jamming caused by unilateral movement lag or advance. It is especially suitable for double-cavity or multi-cavity molds, ensuring symmetrical demolding of products.

[0121] Of course, in some other examples, the drive mechanism 500 described above can also adopt a structure with a screw and double nuts to achieve synchronous movement of the two second templates 200.

[0122] Understandably, referring to Figure 3 and Figure 7 In this embodiment, a position sensor 540 is provided on the transmission rack 530. This sensor monitors the linear movement position of the transmission rack 530 in real time and feeds the position signal back to the control system, thereby preventing excessive movement of the second template 200 and accurately controlling the demolding of the product.

[0123] Reference Figure 2 , Figure 6 as well as Figure 7 In this embodiment, the first template 100 is provided with a first guide rail 110, and the transmission rack 530 is provided with a second guide rail 531. The first guide rail 110 and the second guide rail 531 are movably connected, which realizes the smooth linear movement of the transmission rack 530 along the guide rail, ensures accurate and reliable transmission, effectively disperses the motion load, reduces frictional resistance, and improves transmission efficiency, accuracy and service life.

[0124] Specifically, in this embodiment, the first guide rail portion 110 is a guide groove, and the second guide rail portion 531 is a guide protrusion that is engaged in the guide groove, which is not limited here.

[0125] Reference Figure 6In some embodiments of this utility model, the second template 200 is provided with a first mounting part 220, and the transmission rack 530 is provided with a second mounting part 532. The first mounting part 220 and the second mounting part 532 at least partially overlap, and the dimensions of the first mounting part 220 and the second mounting part 532 are adapted to each other, thereby further preventing and improving the relative positional stability of the transmission rack 530 and the second template 200.

[0126] Specifically, refer to Figure 6 In this embodiment, the first mounting portion 220 is a mounting recess, and the second mounting portion 532 is a mounting protrusion. The mounting protrusion is embedded in the mounting recess and is fixedly connected to the second template 200 by bolts. The above-mentioned fitting structure can effectively prevent the transmission rack 530 from undergoing lateral or longitudinal displacement during movement, thereby reducing loosening, offset, or shaking.

[0127] Reference Figure 6 and Figure 7 In some embodiments of this utility model, the injection mold further includes a protective structure, which is arranged in accordance with the mold cavity. The protective structure includes a flexible protective member 910, one end of which is connected to the first template 100 and the other end of which is connected to the second template 200. The flexible protective member 910 can extend or retract as the second template 200 moves.

[0128] The first template 100 and the second template 200 are connected by a flexible protective component 910, which is arranged in accordance with the mold cavity. It can automatically extend or retract as the second template 200 moves, dynamically covering the mold cavity and effectively preventing foreign objects from entering or materials from overflowing. The flexible design adapts to the movement process of the second template 200, taking into account both protection and movement coordination, and improving the protection reliability of the mold cavity area.

[0129] Specifically, in this embodiment, the flexible protective component 910 is a flexible plate; wherein, the area on the flexible plate away from its two ends can be bent and deformed.

[0130] The flexible plate, through the design of the bendable and deformable area in the middle, can be flexibly folded or unfolded when the second template 200 moves, which not only maintains dynamic coverage and protection of the mold cavity, but also avoids damage to the protective components or wear of the template caused by rigid tension; the bending and deformation characteristics enhance the structural adaptability, ensuring that the flexible protective component 910 moves more smoothly with the second template 200, and improving the reliability of protection and the coordination of movement.

[0131] Of course, in other embodiments, the flexible protective element 910 may also be a corrugated pipe, which is not limited here.

[0132] Understandably, referring to Figure 2In some examples of this utility model, one end of the flexible protective component 910 is detachably connected to the first template 100, and the other end of the flexible protective component 910 is detachably connected to the second template 200. Using this installation method, the flexible protective component 910 can be quickly disassembled and assembled, facilitating individual replacement or cleaning, reducing the overall mold assembly and disassembly time, and improving production efficiency.

[0133] Understandably, referring to Figure 2 In some examples of this utility model, flexible protective members 910 are respectively provided on the opposite side walls of the drive mechanism 500 along the moving direction perpendicular to the second template 200, that is, in the up and down direction.

[0134] Flexible protective components 910 are installed on both sides of the drive mechanism 500, which is perpendicular to the moving direction (up and down direction) of the second template 200, to make full and reasonable use of the upper and lower space of the injection mold and to fully cover the upper and lower areas except for the drive mechanism 500.

[0135] Understandably, referring to Figure 2 In some examples of this utility model, the protective structure also includes a protective baffle 920, which is fixedly connected to the first template 100 and covers the drive mechanism 500.

[0136] The protective baffle 920 can effectively shield the drive mechanism 500, preventing personnel from accidentally contacting moving parts and improving operational safety; at the same time, it can block dust and foreign objects from entering, reduce equipment wear, and improve operational stability; it can also reduce noise and vibration transmission, and enhance the adaptability and reliability of the equipment in complex environments.

[0137] Reference Figure 2 In this embodiment, the protective baffle 920 and the flexible protective component 910 are arranged sequentially along the moving direction perpendicular to the second template 200. The protective baffle 920 and the flexible protective component 910 work together to form layered protection in the vertical direction.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An injection mold with protective function, characterized in that, include: The template assembly includes a first template and a second template, a mold cavity for molding soft rubber products is formed between the first template and the second template, and the second template is movable relative to the first template to have a closed mold state and a closed mold state; The protective structure corresponds to the mold cavity arrangement. The protective structure includes a flexible protective component. One end of the flexible protective component is connected to the first template, and the other end is connected to the second template. The flexible protective component can extend or retract as the second template moves.

2. The injection mold with protective function according to claim 1, characterized in that, The flexible protective component is a flexible plate. The flexible plate can be bent and deformed in the regions away from its two ends.

3. The injection mold with protective function according to claim 1, characterized in that, One end of the flexible protective component is detachably connected to the first template, and the other end of the flexible protective component is detachably connected to the second template.

4. The injection mold with protective function according to claim 1, characterized in that, The injection mold also includes a drive mechanism, which is located between the first template and the second template. The power output end of the drive mechanism is connected to the second template for driving the second template to move relative to the first template.

5. The injection mold with protective function according to claim 4, characterized in that, The flexible protective components are respectively provided on the opposite side walls of the drive mechanism along the moving direction perpendicular to the second template.

6. The injection mold with protective function according to claim 4, characterized in that, The protective structure also includes a protective baffle, which is connected to the first template and covers the driving mechanism.

7. The injection mold with protective function according to claim 6, characterized in that, The protective baffle and the flexible protective component are arranged sequentially along a direction perpendicular to the movement direction of the second template.

8. The injection mold with protective function according to claim 4, characterized in that, There are two second templates, with the first template located between the two second templates; Both of the second templates are drive-connected to the power output end of the drive mechanism.

9. The injection mold with protective function according to claim 8, characterized in that, The drive mechanism includes: A drive motor is located on the first template; A drive gear, which is connected to the output shaft of the drive motor in a transmission manner; Two transmission racks are provided, each corresponding to and fixedly connected to one of the two second templates. One of the transmission racks is engaged with one side of the drive gear, and the other transmission rack is engaged with the opposite side of the drive gear.

10. An injection molding machine, characterized in that, Including the protective injection mold as described in any one of claims 1 to 9.

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