Rubber vulcanization mold and application method thereof

Abstract

The rubber vulcanization mold comprises an upper rubber vulcanization mold body, and a demolding auxiliary mechanism is arranged at the bottom of the upper rubber vulcanization mold body; the device has the beneficial effects that the motor serves as a power source, the output shaft of the motor directly drives the transmission plate to rotate, the rotating motion is converted into planar motion through the four sets of connecting arms which are symmetrically and precisely distributed, and each set of connecting arms are reliably connected with the linkage plate through the special transmission part; the movement of the linkage plate further pushes the piston to do up-down linear movement under the precise guide of the limiting piece, the up-down linear movement of the piston is converted into the horizontal movement of the trigger plate through the specially designed linkage rod, and the extension plate ensures that four demolding point positions can achieve completely synchronous movement, which is the key to achieve uniform demolding force. And the trigger plate moves to finally drive the knocking rod to quickly slide along the high-precision sleeve, so that the end part of the knocking rod can accurately impact the side wall of the lower mold at preset frequency and force.

Description

Technical Field

[0001] The present invention relates to the technical field of vulcanization molding, and particularly to a rubber vulcanization mold and an application method thereof. Background Art

[0002] In the production process of rubber products, vulcanization molding is one of the most critical technological processes. The vulcanization process involves placing a pre-prepared rubber blank in a mold and subjecting the rubber molecules to cross-linking reactions under high temperature and high pressure conditions to obtain a final product with a specific shape and excellent mechanical properties. This process not only determines the geometric accuracy and surface quality of the product but also directly affects key performance indicators such as its mechanical strength, wear resistance, and service life. The demolding process, as a key subsequent process after vulcanization molding, directly affects multiple aspects: First, the integrity and dimensional accuracy of the product. An improper demolding method may cause the product to tear, deform, or have surface scratches. Second, production efficiency. The demolding difficulty directly determines the production rhythm and production capacity. Third, the service life of the mold. Rough demolding operations will accelerate the wear of the mold.

[0003] In actual implementation, in existing mold demolding devices, the following several methods are usually used to separate the mold from the product: One is through a single-point knocking structure, that is, a single or a small number of demolding mechanisms are arranged on one side of the mold, and the knocking rod is driven by an electric push rod or a cylinder to impact the side wall of the mold to achieve demolding. The other is to use an eccentric pulling or rotational torque method, where the mold is moved by a pull rod or a rotating part to achieve mold separation. However, these traditional methods generally have the following technical problems:

[0004] 1. Uneven distribution of demolding force. The knocking / pulling method at a single point or an asymmetric position is likely to cause uneven stress on the mold during demolding. Especially in the case of a large product area or a complex structure, some parts of the mold become loose first while other parts are still adhered, resulting in uneven loading of the mold. Long-term use is likely to cause deformation or damage to the mold structure.

[0005] 2. Increased mold wear due to local impact. The single-point impact is frequently concentrated on one side or one demolding point of the mold, which not only affects the demolding effect but also, due to excessive local stress, exacerbates the erosion and wear of the mold surface and shortens the service life of the mold.

[0006] 3. Incomplete demolding and easy mold clamping of the product. Uneven demolding will cause part of the product to be separated while part still adheres to the mold. Especially for flexible or thin-structured products, phenomena such as stretching deformation, breakage, or inability to demold and stick are likely to occur, seriously affecting the product yield rate. Summary of the Invention

[0007] (I) Technical Problems to be Solved

[0008] To solve the above problems of the prior art, the present invention provides a rubber vulcanization mold and its application method, which solves the problems of uneven distribution of demolding force, incomplete demolding, and easy wear of the mold during the demolding process of traditional molds.

[0009] (II) Technical Solution

[0010] To achieve the above object, the main technical solution adopted by the present invention is:

[0011] A rubber vulcanization mold includes an upper rubber vulcanization mold body, and a demolding assistance mechanism is provided at the bottom of the upper rubber vulcanization mold body;

[0012] The demolding assistance mechanism includes a linkage rod, a trigger plate, a piston, a limiting member, and a knocking rod. A trigger plate is provided on one side of the linkage rod, a knocking rod is fixedly connected to the inner side of the trigger plate, and a piston is vertically slidably connected to the inner wall of the limiting member.

[0013] The bottom end of the upper rubber vulcanization mold body is attached to the bottom end of the lower rubber vulcanization mold body. Support plates are fixedly connected to the four corners at the bottom end of the lower rubber vulcanization mold body, and an injection hole is connected to the outside of the upper rubber vulcanization mold body.

[0014] The demolding assistance mechanism further includes a motor, a limiting member, a fixing plate, a transmission plate, a connecting arm, and a linkage plate. The output end of the motor is fixedly connected to the transmission plate, and the top end of the transmission plate is rotatably connected to the bottom end of the lower rubber vulcanization mold body.

[0015] A connecting plate is fixedly connected to the outer wall of the lower rubber vulcanization mold body. A sleeve is fixedly connected to the inner wall of each connecting plate, and the knocking rod is slidably connected to the inner wall of each sleeve.

[0016] A return spring is fixedly connected to the inner side of each trigger plate, and one end of each return spring is fixedly connected to the inner side of each connecting plate respectively.

[0017] Four connecting arms are rotatably connected to the bottom end of the transmission plate. One end of every two adjacent connecting arms is rotatably connected to a transmission member, and the bottom end of each transmission member is rotatably connected to a linkage plate.

[0018] Each linkage plate is respectively rotatably connected to the inner wall of each piston, and a fixing plate is fixedly connected to the bottom end of each limiting member.

[0019] An extension plate is fixedly connected to one end of two of the pistons, and linkage rods are fixedly connected to the outside of the two extension plates and the outside of the other two pistons.

[0020] A method for applying a rubber vulcanization mold, which is applied to the rubber vulcanization mold described in any one of claims 1-8, includes the following steps:

[0021] S1. Startup stage: Start the motor to drive the transmission plate to rotate, and drive the linkage plate to move through the connecting arm.

[0022] S2. Linkage trigger: The linkage plate pushes the piston to slide within the limiting member, causing the linkage rod to drive the trigger plate to move downward towards the center of the rubber vulcanization mold body, while compressing the return spring.

[0023] S3. Knocking demolding: The trigger plate pushes the knocking rod to slide along the sleeve and strike the side wall of the lower rubber vulcanization mold body, generating vibration for demolding.

[0024] S4. Reset preparation: The return spring releases its elastic force to reset the knocking rod and the linkage mechanism.

[0025] The knocking action of the knocking rod realizes the synchronous movement of multiple linkage rods through the extension plate, and the knocking frequency is controlled by the motor speed.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the present invention are as follows: The motor serves as the power source, and its output shaft directly drives the transmission plate to perform a rotational motion. This rotational motion is converted into a planar motion through four groups of symmetrically and precisely distributed connecting arms. Each group of connecting arms is reliably connected to the linkage plate through a special transmission component. The movement of the linkage plate further pushes the piston to perform a linear up-and-down motion under the precise guidance of the limiting member. During this process, the linear up-and-down motion of the piston is converted into the horizontal movement of the trigger plate through a specially designed linkage rod. It is worth mentioning that the extension plate ensures that the four demolding points can achieve completely synchronous movement, which is the key to realizing uniform demolding force. The movement of the trigger plate ultimately drives the knocking rod to slide rapidly along the high-precision sleeve, enabling the end of the knocking rod to precisely strike the side wall of the lower rubber vulcanization mold body at a preset frequency and force. During the demolding process, the high-performance return spring is precisely compressed to store elastic potential energy; when the motor rotates in reverse, this stored energy is effectively released to drive the entire mechanism to quickly reset. The entire transmission process realizes the precise power transmission from the motor rotational motion to the final reciprocating impact of the knocking rod. Each link has been carefully designed and optimized. Through the simultaneous action of four completely synchronous knocking points, the problem of uneven force caused by traditional single-point demolding is completely solved. Brief description of the drawings

[0028] Figure 1 It is a schematic structural diagram of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the bottom of the present invention;

[0030] Figure 3Partial exploded structural schematic diagram of the present invention;

[0031] Figure 4 of the present invention Figure 3 Enlarged view of part A in;

[0032] Figure 5 Structural schematic diagram of the motor part of the present invention;

[0033] Figure 6 of the present invention Figure 5 Enlarged view of part B in;

[0034] Figure 7 Schematic diagram of the demoulding rate part of the present invention.

[0035]

Explanation of reference numerals

[0036] 1. Upper rubber vulcanization mold body; 2. Injection hole; 3. Support plate; 4. Demoulding assistance mechanism; 401. Connecting plate; 402. Motor; 403. Limiting member; 404. Fixed plate; 405. Transmission plate; 406. Connecting arm; 407. Linking plate; 408. Piston; 409. Extension plate; 410. Trigger plate; 411. Sleeve; 412. Knocking rod; 413. Return spring; 414. Linking rod; 415. Transmission member; 5. Lower rubber vulcanization mold body. Detailed implementation manners

[0037] For better explaining the present invention for easy understanding, the present invention will be described in detail below in conjunction with the accompanying drawings through specific implementation manners.

[0038] Please refer to Figures 1 to 7 as shown, a rubber vulcanization mold and its application method of the present invention include an upper rubber vulcanization mold body 1, and a demoulding assistance mechanism 4 is provided at the bottom of the upper rubber vulcanization mold body 1;

[0039] Demolding assistance mechanism 4, the demolding assistance mechanism 4 includes a linkage rod 414, a trigger plate 410, a piston 408, a limiting member 403 and a knocking rod 412. A trigger plate 410 is provided on one side of the linkage rod 414. A knocking rod 412 is fixedly connected to the inner side of the trigger plate 410. The piston 408 is vertically slidably connected to the inner wall of the limiting member 403. In the actual implementation process, the motor 402 serves as the power source, and its output shaft directly drives the transmission plate 405 to perform a rotational motion. This rotational motion is converted into a planar motion through four groups of symmetrically and precisely distributed connecting arms 406. Each group of connecting arms 406 is reliably connected to the linkage plate 407 through a special transmission member 415. The motion of the linkage plate 407 further pushes the piston 408 to perform a vertical linear motion under the precise guidance of the limiting member 403. In this process, the vertical linear motion of the piston 408 is converted into the horizontal movement of the trigger plate 410 through a specially designed linkage rod 414. It is worth mentioning that the extension plate 409 ensures that the four demolding points can achieve completely synchronous motion, which is the key to realizing uniform demolding force. The motion of the trigger plate 410 finally drives the knocking rod 412 to quickly slide along the high-precision sleeve 411, so that the end of the knocking rod 412 can accurately impact the side wall of the rubber vulcanization mold body 5 at a preset frequency and force. During the demolding process, the high-performance return spring 413 is accurately compressed to store elastic potential energy; when the motor 402 rotates in reverse, this stored energy is effectively released to drive the entire mechanism to quickly reset. The entire transmission process realizes the precise power transmission from the rotational motion of the motor 402 to the reciprocating impact of the final knocking rod 412. Each link is carefully designed and optimized. Through the simultaneous action of four completely synchronous knocking points, the problem of uneven force caused by traditional single-point demolding is completely solved.

[0040] Optionally, the bottom end of the upper rubber vulcanization mold body 1 is attached to the lower rubber vulcanization mold body 5. Four corners at the bottom end of the lower rubber vulcanization mold body 5 are fixedly connected with support plates 3. The outer side of the upper rubber vulcanization mold body 1 is connected with an injection hole 2. In the actual implementation process, through the stable layout of four-point support, the overall rigidity is significantly improved, effectively preventing the deformation of the lower rubber vulcanization mold body 5 during the vulcanization process. The setting of the support plates 3 not only ensures the precise alignment of the upper and lower molds, but also facilitates the rapid installation and horizontal adjustment of the molds, greatly simplifying the commissioning work at the production site. At the same time, this support structure can evenly disperse the clamping force, avoid local stress concentration, and extend the service life of the lower rubber vulcanization mold body 5 against deformation.

[0041] Optionally, the demolding assisting mechanism 4 further includes a motor 402, a limiting member 403, a fixing plate 404, a transmission plate 405, a connecting arm 406 and a linkage plate 407. The output end of the motor 402 is fixedly connected to the transmission plate 405, and the top end of the transmission plate 405 is rotatably connected to the bottom end of the lower rubber vulcanizing mold body 5. In the actual implementation process, the motor 402 is a servo motor 402, and the application of the servo motor 402 realizes the precise control of the demolding force. Through the collaborative work of the multi-stage transmission mechanism, the rotational motion is converted into precise linear motion, ensuring the smooth and reliable demolding action. This design particularly optimizes the power transmission path, reduces energy loss, and makes the system operation more energy-saving and environmentally friendly.

[0042] Optionally, a connecting plate 401 is fixedly connected to the outer wall of the lower rubber vulcanizing mold body 5. The inner wall of each connecting plate 401 is fixedly connected with a sleeve 411, and the inner wall of each sleeve 411 is slidably connected with a knocking rod 412. In the actual implementation process, the rigid fixation of the connecting plate 401 ensures the effective transmission of the knocking force, and the guiding function of the sleeve 411 makes the movement track of the knocking rod 412 more precise, avoiding the phenomenon of eccentric wear.

[0043] Optionally, a return spring 413 is fixedly connected to the inner side of each trigger plate 410, and one end of each return spring 413 is fixedly connected to the inner side of each connecting plate 401 respectively. In the actual implementation process, the buffering effect of the return spring 413 effectively absorbs the impact energy, reduces the vibration and noise during the operation of the mechanism. This design makes the demolding action softer, ensuring both the demolding effect and avoiding damage to the lower rubber vulcanizing mold body 5 and the product.

[0044] Optionally, four connecting arms 406 are rotatably connected to the bottom end of the transmission plate 405. One end of every two adjacent connecting arms 406 is rotatably connected with a transmission member 415, and the bottom end of each transmission member 415 is rotatably connected with a linkage plate 407. In the actual implementation process, the rotational motion of the motor 402 can be accurately converted into the required demolding action. The symmetrical layout of the four-bar linkage mechanism ensures the balance of power transmission, making the force on each demolding point uniform.

[0045] Optionally, each linkage plate 407 is respectively rotatably connected to the inner wall of each piston 408, and the bottom end of each limiting member 403 is fixedly connected with a fixing plate 404. In the actual implementation process, the linear motion of the piston 408 can accurately control the action of the linkage rod 414. The setting of the limiting member 403 ensures the precise control of the motion stroke and avoids the occurrence of overload conditions.

[0046] Optionally, extension plates 409 are fixedly connected to one ends of two of the pistons 408, and linkage rods 414 are fixedly connected to the outer sides of the two extension plates 409 and the outer sides of another two of the pistons 408. During actual implementation, synchronous movement of multiple demolding points is achieved, ensuring the consistency of the demolding action.

[0047] Optionally, a method for applying a rubber vulcanization mold, which is applied to the rubber vulcanization mold according to any one of claims 1-8, includes the following steps:

[0048] S1. Starting stage: Start the motor 402 to drive the transmission plate 405 to rotate, and drive the linkage plate 407 to move through the connecting arm 406;

[0049] S2. Linkage triggering: The linkage plate 407 pushes the piston 408 to slide within the limiting member 403, causing the linkage rod 414 to drive the trigger plate 410 to move downward towards the center of the rubber vulcanization mold body 5, and simultaneously compressing the return spring 413;

[0050] S3. Knocking demolding: The trigger plate 410 pushes the knocking rod 412 to slide along the sleeve 411 and strike the side wall of the lower rubber vulcanization mold body 5 to generate vibration demolding;

[0051] S4. Reset preparation: The return spring 413 releases its elastic force to reset the knocking rod 412 and the linkage mechanism. During actual implementation, the step-by-step control logic ensures the precise connection of each action link, greatly improving the operation efficiency and reliability. This method is applicable to the production of rubber products of various specifications and has strong versatility and adaptability.

[0052] Optionally, the knocking action of the knocking rod 412 realizes the synchronous movement of multiple linkage rods 414 through the extension plate 409, and the knocking frequency is controlled by the rotation speed of the motor 402. During actual implementation, the synchronous control design ensures the action consistency of each demolding point, avoids product deformation caused by uneven stress, and different demolding effects of different intensities can be achieved by precisely adjusting the rotation speed of the motor 402 to meet the demolding requirements of various rubber products. This intelligent control method greatly improves the demolding quality and work efficiency.

[0053] Working principle: The servo motor 402 is used as a stable power source. The output shaft of the motor 402 is directly connected to the transmission plate 405. After the motor 402 is powered on, the transmission plate 405 starts to rotate stably. This rotational motion is first transmitted through four evenly distributed connecting arms 406. Each pair of the connecting arms 406 is rotationally connected by a special transmission part 415 and forms a stable cooperation with the linkage plate 407, so that the rotational motion is accurately converted into the planar reciprocating motion of the linkage plate 407. The linkage plate 407 further pushes the piston 408 arranged in the limiting part 403 to make a linear sliding motion in the vertical direction. And the limiting part 403, as a high-precision guide rail assembly, ensures the verticality of the movement track of the piston 408 and the repeated positioning accuracy. The up-and-down linear motion of the piston 408 is converted into the horizontal movement of the trigger plate 410 through the linkage rod 414 fixedly connected thereto. The movement of the trigger plate 410 drives the knocking rod 412 fixed to its inner side to make a sliding impact motion in the high-precision sleeve 411 arranged on the connecting plate 401. During this process, the four knocking rods 412 achieve a completely synchronous knocking action under the linkage action of the extension plate 409, and their ends impact the peripheral side walls of the lower rubber vulcanization mold body 5 at a preset frequency and force, thereby generating uniform and powerful demolding vibration, overcoming the problems of uneven distribution of demolding force, product damage or incomplete demolding caused by single-point knocking in the traditional demolding structure. At the same time, during the knocking action, the trigger plate 410 compresses the return spring 413 to store elastic potential energy, providing a power source for the next rapid reset. When the motor 402 completes the current cycle or enters the reverse stage, the return spring 413 releases energy, driving structural elements such as the trigger plate 410, the linkage rod 414, the piston 408 and the knocking rod 412 to quickly return along the original path, realizing the automatic reset and state reset of the mechanism. This integrated transmission structure not only realizes the full-chain power transmission from the rotational motion of the motor 402 to the precise impact of the knocking rod 412, but also solves various demolding drawbacks caused by simple structure and uneven transmission of the traditional mold through multi-point synchronous knocking, significantly improving the working efficiency, stability and product yield of the mold system, and having wide practicability and promotion value.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. And the standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the records of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0055] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A rubber vulcanization mold, comprising an upper rubber vulcanization mold body (1), characterized in that: A demolding assisting mechanism (4) is provided at the bottom of the upper rubber vulcanizing mold body (1); Demolding assisting mechanism (4), the demolding assisting mechanism (4) includes a linkage rod (414), a trigger plate (410), a piston (408), a limiting member (403) and a knocking rod (412), a trigger plate (410) is provided on one side of the linkage rod (414), a knocking rod (412) is fixedly connected to the inner side of the trigger plate (410), and a piston (408) is vertically slidably connected to the inner wall of the limiting member (403).

2. A rubber vulcanization mold according to claim 1, characterized in that: The bottom end of the upper rubber vulcanizing mold body (1) is attached to the lower rubber vulcanizing mold body (5), the bottom ends of the four corners of the lower rubber vulcanizing mold body (5) are fixedly connected with support plates (3), and an injection hole (2) is connected to the outside of the upper rubber vulcanizing mold body (1).

3. A rubber vulcanization mold according to claim 1, characterized in that: The demolding assisting mechanism (4) further includes a motor (402), a limiting member (403), a fixing plate (404), a transmission plate (405), a connecting arm (406) and a linkage plate (407), the output end of the motor (402) is fixedly connected with a transmission plate (405), and the top end of the transmission plate (405) is rotatably connected to the bottom end of the lower rubber vulcanizing mold body (5).

4. A rubber vulcanization mold according to claim 1, characterized in that: A connecting plate (401) is fixedly connected to the outer wall of the lower rubber vulcanizing mold body (5), a sleeve (411) is fixedly connected to the inner wall of each connecting plate (401), and the knocking rod (412) is slidably connected to the inner wall of each sleeve (411).

5. A rubber vulcanization mold according to claim 1, characterized in that: A return spring (413) is fixedly connected to the inner side of each trigger plate (410), and one end of each return spring (413) is fixedly connected to the inner side of each connecting plate (401) respectively.

6. The rubber vulcanization mold according to claim 1, wherein: Four connecting arms (406) are rotatably connected to the bottom end of the transmission plate (405), a transmission member (415) is rotatably connected to one end of every two adjacent connecting arms (406), and a linkage plate (407) is rotatably connected to the bottom end of each transmission member (415).

7. A rubber vulcanization mold according to claim 1, characterized in that: Each linkage plate (407) is respectively rotatably connected to the inner wall of each piston (408), and a fixing plate (404) is fixedly connected to the bottom end of each limiting member (403).

8. A rubber vulcanization mold according to claim 1, characterized in that: An extension plate (409) is fixedly connected to one end of two of the pistons (408), and linkage rods (414) are fixedly connected to the outer sides of the two extension plates (409) and the outer sides of the other two pistons (408).

9. A method for applying a rubber vulcanization mold, characterized in that: The rubber vulcanizing mold applied to any one of claims 1-8 includes the following steps: S1. Starting stage, start the motor (402) to drive the transmission plate (405) to rotate, and drive the linkage plate (407) to move through the connecting arm (406); S2. Linkage trigger, the linkage plate (407) pushes the piston (408) to slide in the limiting member (403), so that the linkage rod (414) drives the trigger plate (410) to move towards the center of the lower rubber vulcanizing mold body (5), and at the same time compresses the return spring (413); S3. Knock demoulding, the trigger plate (410) pushes the knocking rod (412) to slide along the sleeve (411) and impacts the side wall of the lower rubber vulcanization die body (5), generating vibration for demoulding; S4. Reset preparation, the reset spring (413) releases elastic force to reset the knocking rod (412) and the linkage mechanism.

10. A method for applying a rubber vulcanization mold according to claim 9, characterized in that: The impact action of the knocking rod (412) realizes the synchronous movement of the multi-link rod (414) through the extension plate (409), and the knocking frequency is controlled by the rotation speed of the motor (402).

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