Movable type block fixing structure and tire mold

Abstract

This invention relates to the field of tire manufacturing technology, specifically to a type block fixing structure and tire mold. The type block body is movably mounted on a mold side plate, and further includes: a spring-back mechanism located at the bottom of a placement groove, used to apply an upward spring-back thrust to the type block body; a fixing groove formed on the side wall of the type block body; a moving component movably mounted horizontally within the mold side plate and adapted to the fixing groove; and a translation mechanism located within the mold side plate, used to drive the moving component to translate into or out of the fixing groove. This invention, through the cooperation of the spring-back mechanism, fixing groove, moving component, and translation mechanism, enables rapid replacement of the type block body from the front of the mold side plate without disassembling or flipping the mold side plate, simplifying the operation steps. The overall structure is simple and compact, reducing the difficulty of parts processing and better adapting to the needs of large-scale mass production.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, specifically to a movable block fixing structure and a tire mold. Background Technology

[0002] In the tire manufacturing process, tire molds are the core equipment that determines the forming precision and appearance quality of tires. The movable type, as a key functional component of the tire mold, is mainly used to form the tire sidewall's markings, including brand logos, specifications, production batch numbers, certification marks, and decorative patterns. Because the movable type needs to be replaced according to different tire models, brand requirements, or changes in certification standards, it is usually designed with a fan-shaped structure to match the curved contour of the mold side plate.

[0003] To secure the type blocks, multiple threaded holes are typically pre-drilled at the bottom of each type block. Corresponding slots and countersunk holes are made on the mold side plate. During assembly, the type blocks are placed in the slots and aligned with the bottom. Bolts are then threaded through the mold side plate and connected to the threaded holes in the type blocks, thus securing them in place. Because the front of the mold side plate (facing the tire molding cavity) must maintain molding accuracy, no operating space is available. Therefore, disassembly and assembly of this bolt-fixed structure must be performed from the back of the mold side plate. When replacing type blocks, the operator must first disassemble the entire mold from the vulcanizing molding equipment. Then, using lifting equipment, the mold side plate is lifted and flipped so that the back faces upwards. The bolts securing the type blocks are then unscrewed one by one, the old type blocks are removed, and new type blocks are replaced. Finally, the bolt tightening, side plate flipping, and mold reassembly are completed in reverse.

[0004] However, the entire process, from mold disassembly and side plate hoisting and flipping to bolt removal and mold reassembly, typically takes 2-4 hours, severely impacting tire production efficiency and failing to meet the rapid changeover requirements of modern production lines. Furthermore, the mold side plates are mostly large metal components; hoisting and flipping require specialized lifting equipment and operators, and the side plates are prone to edge deformation and surface scratches due to center of gravity shift or collisions during flipping, thus affecting mold forming accuracy and causing mold damage. Therefore, we propose a movable-block fixing structure and tire mold to effectively solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a type block fixing structure and a tire mold, which solves the problem mentioned in the background art that the type blocks cannot be quickly replaced from the front of the mold side plate.

[0006] This invention is achieved through the following technical solution: a movable type block fixing structure, comprising a movable type block body movably disposed on a mold side plate, wherein the top surface of the mold side plate is provided with a placement groove adapted to the movable type block body, and further comprising:

[0007] A spring-back mechanism, located at the bottom of the placement slot, is used to apply an upward spring-back thrust to the movable type block body;

[0008] A fixing groove is formed on the side wall of the movable type block body;

[0009] A movable component, which is movably disposed in the mold side plate in the horizontal direction and adapted to the fixed groove;

[0010] A translation mechanism is provided inside the mold side plate to drive the moving component to translate into or out of the fixed slot; when the moving component is embedded in the fixed slot, the top surface of the movable block body is coplanar with the upper surface of the mold side plate.

[0011] Optionally, the top surface of the mold side plate is detachably fitted with a mounting shell, the upper end of the mounting shell is open, and a cap is magnetically fixed at the upper end of the mounting shell, the upper surface of the cap being coplanar with the top surface of the mold side plate;

[0012] The movable component slides horizontally within the mounting housing, and a through-hole is provided on the side of the mounting housing facing the placement groove for the movable component to pass through; the translation mechanism is located within the mounting housing.

[0013] Optionally, the translation mechanism includes a first lever and a first return spring;

[0014] The first push block is fixed to the top of the movable component and located inside the mounting shell; one end of the first return spring is connected to the side of the movable component facing away from the placement groove, and the other end of the first return spring is connected to the inner side wall of the mounting shell; in its natural state, the first return spring is in a horizontally extended state.

[0015] Optionally, the translation mechanism includes a second lever and a stop;

[0016] The second lever is fixed to the top of the movable component and located inside the mounting housing; the stop block is detachably inserted into the mounting housing, and the stop block abuts against the side of the movable component facing away from the placement groove.

[0017] Optionally, the translation mechanism includes a third paddle and a protrusion;

[0018] The third lever is fixed to the top of the movable component and located inside the mounting housing; the protrusion is integrally formed on the bottom of the cap, and the protrusion abuts against the side of the movable component facing away from the placement groove.

[0019] Optionally, the translation mechanism includes a first bolt and a second bolt spaced apart along the horizontal direction;

[0020] Both the first bolt and the second bolt are threaded to the mounting shell. A trapezoidal groove, wider at the top and narrower at the bottom, is provided on the top of the movable component. The trapezoidal groove is located directly below the first bolt and the second bolt.

[0021] Optionally, the mold side plate is provided with a sliding groove for the moving component to slide horizontally, and the sliding groove is connected to the placement groove; the moving component is provided with a first inclined surface and a second inclined surface on the upper and lower sides of the end facing the placement groove, respectively;

[0022] A second return spring is connected to the side of the moving component facing away from the placement groove. The end of the second return spring away from the moving component is connected to the inner wall of the slide groove. In its natural state, the second return spring is in a horizontally extended state.

[0023] Optionally, the translation mechanism includes a block that slides horizontally in a fixed groove, and a linkage rod is fixed on the side of the block facing away from the moving component. The linkage rod extends horizontally and is movably inserted into the movable type block body.

[0024] A limit block is fixed at the end of the linkage rod away from the block, and an installation groove for the limit block to slide horizontally is provided in the body of the movable type block;

[0025] A third return spring is fitted on the linkage rod. One end of the third return spring is connected to the limiting block, and the other end of the third return spring is connected to the inner wall of the mounting groove. In the initial state, the third return spring is in a horizontally extended state so that the blocking block retracts to the inner side of the fixing groove.

[0026] Optionally, a first connecting rod is hinged to the side of the limiting block facing away from the linkage rod, and a second connecting rod is hinged to the end of the first connecting rod away from the limiting block. The end of the second connecting rod away from the first connecting rod is hinged to the inner wall of the mounting groove.

[0027] A top block is fixed on the inner wall of the placement slot, and the top block is located below the first connecting rod and the second connecting rod;

[0028] When the first link and the second link cooperate to form a positive V-shaped structure, the block is located inside the fixed groove;

[0029] When the first link and the second link cooperate to form an inverted V-shaped structure, and the apex of the inverted V-shaped structure abuts against the inner top wall of the mounting groove, the block is located outside the fixed groove, and the outer surface of the block does not exceed the outer surface of the movable block body facing the moving component.

[0030] The present invention also provides a tire mold, including the movable block fixing structure as described above.

[0031] Compared with the prior art, the present invention provides a movable type block fixing structure and a tire mold, which have the following beneficial effects:

[0032] 1. This invention, through the cooperation of the springback mechanism, the fixing groove, the moving component and the translation mechanism, enables the quick replacement of the movable type block body from the front of the mold side plate without disassembling or flipping the mold side plate. The operation steps are simplified and the overall structure is simple and compact, which not only reduces the difficulty of parts processing, but also adapts to the needs of large-scale mass production.

[0033] 2. This invention, through the cooperation of the mounting shell and the cap, allows the cap to be removed by magnetic attraction alone, thereby enabling manual operation of the translation mechanism inside the mounting shell to assemble and disassemble the movable type blocks. This avoids the drawback of traditional structures that require disassembling the mold side plate to adjust the fixing components, further improving operational flexibility and maintenance convenience.

[0034] 3. This invention, through the cooperation of a blocking block, a second return spring, a first connecting rod, a second connecting rod, a third return spring, and a top block, allows the movable type block to be placed in the initial position of the placement slot. Upon initial downward pressure, the pushing force of the first inclined surface and the rebound of the second return spring drive the moving component to automatically extend and insert into the fixing slot, quickly locking the movable type block. Continuing to press the movable type block down until it abuts the bottom of the placement slot causes the top block to push the first and second connecting rods together, causing the moving component to automatically retract and disengage from the fixing slot. Simultaneously, the blocking block moves to seal the fixing slot, preventing the moving component from being inserted a second time. The entire process requires no manual adjustment of the translation mechanism; fully automated operation is triggered by only two pressing actions, significantly simplifying the assembly and disassembly process. Attached Figure Description

[0035] Figure 1 This is the overall assembly drawing of Example 1;

[0036] Figure 2 This is a schematic diagram of the placement slot in Embodiment 1;

[0037] Figure 3 This is a schematic diagram of the movable type block body in Embodiment 1;

[0038] Figure 4 This is a schematic diagram of the mounting shell in Embodiment 1;

[0039] Figure 5 This is an exploded view of the mounting shell in Example 1;

[0040] Figure 6 This is a state diagram of the movable type assembly in Example 1;

[0041] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0042] Figure 8 This is a diagram showing the state of the movable type blocks after assembly in Example 1;

[0043] Figure 9This is a state diagram of the movable type assembly in Example 2;

[0044] Figure 10 for Figure 9 Enlarged view of point B in the middle;

[0045] Figure 11 This is a diagram showing the state of the movable type blocks after assembly in Example 2;

[0046] Figure 12 This is a state diagram of the movable type assembly in Example 3;

[0047] Figure 13 for Figure 12 Enlarged view of point C in the middle;

[0048] Figure 14 This is a diagram showing the state of the movable type blocks after assembly in Example 3;

[0049] Figure 15 This is a diagram showing the state of the movable type blocks after assembly in Example 4;

[0050] Figure 16 for Figure 15 Enlarged view at point D;

[0051] Figure 17 This is a state diagram of the movable type assembly in Example 4;

[0052] Figure 18 This is a diagram showing the state of the movable type blocks after assembly in Example 5;

[0053] Figure 19 for Figure 18 Enlarged view at point E in the middle;

[0054] Figure 20 This is a diagram showing the state of the movable type blocks after being pressed twice in Example 5;

[0055] Figure 21 This is a schematic diagram of the translation mechanism in Example 5;

[0056] Figure 22 This is a schematic diagram of the movable component in Example 5.

[0057] In the diagram: 1. Mold side plate; 2. Movable block body; 3. Placement groove; 4. Springback mechanism; 5. Fixing groove; 6. Moving component; 7. Translation mechanism; 701. First lever; 702. First return spring; 703. Second lever; 704. Stop block; 705. Third lever; 706. Protrusion; 707. First bolt; 708. Second bolt; 709. Block; 7010. Linkage rod; 7011. Limiting block; 8. Mounting shell; 9. Cap; 10. Trapezoidal groove; 11. Slide groove; 12. First inclined surface; 13. Second return spring; 14. Mounting groove; 15. First connecting rod; 16. Second connecting rod; 17. Top block. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] Example 1: Please refer to Figures 1 to 8 A movable type fixing structure includes a movable type body 2 movably disposed on a mold side plate 1. The top surface of the mold side plate 1 (i.e. the side facing the tire forming cavity, defined as the front) is provided with a placement groove 3 adapted to the movable type body 2. The outline of the placement groove 3 matches the fan-shaped structure of the movable type body 2, so that the movable type body 2 can be embedded and fixed.

[0060] This embodiment also includes: a springback mechanism 4, a fixing groove 5, a moving component 6, and a translation mechanism 7.

[0061] The spring-back mechanism 4 is located at the bottom of the placement slot 3 and is used to apply an upward spring-back thrust to the movable type block body 2. Specifically, the spring-back mechanism 4 includes several ejector springs located at the bottom of the placement slot 3. A flat-bottomed hole corresponding to each ejector spring is provided at the bottom of the placement slot 3, and the lower end of each ejector spring is located within the corresponding flat-bottomed hole. The ejector springs are evenly distributed along the extension direction of the placement slot 3 (the number and spacing can be adjusted according to the size of the movable type block body 2). In its natural state, each ejector spring is in a vertically extended state, applying an upward spring force to the movable type block body 2. In use, after the movable type block body 2 is placed in the placement slot 3, the upper end of the movable type block body 2 is located outside the placement slot 3 under the action of the ejector springs, facilitating the placement and removal of the movable type block body 2.

[0062] Secondly, the fixing groove 5 is formed on the side wall of the movable type block body 2. The moving component 6 is movably disposed in the mold side plate 1 in the horizontal direction and is adapted to the fixing groove 5. When the moving component 6 moves horizontally and inserts into the fixing groove 5, the vertical movement of the movable type block body 2 can be restricted, thereby fixing the movable type block body 2 in the placement groove 3.

[0063] In addition, the translation mechanism 7 is located inside the mold side plate 1 and is used to drive the moving component 6 to translate into or out of the fixing groove 5. When the moving component 6 is embedded in the fixing groove 5, the top surface of the movable block body 2 is coplanar with the upper surface of the mold side plate 1, ensuring the flatness of the mold forming surface and avoiding affecting the forming quality of the tire sidewall.

[0064] In this embodiment, a mounting shell 8 is detachably embedded in the top surface of the mold side plate 1. The upper end of the mounting shell 8 is open, and the material of the mounting shell 8 is the same as that of the mold side plate 1, both being steel. A cap 9 is magnetically fixed to the upper end of the mounting shell 8 to fill the upper opening of the mounting shell 8. The upper surface of the cap 9 and the upper surface of the mounting shell 8 are both coplanar with the top surface of the mold side plate 1, ensuring that the forming accuracy of the tire sidewall is not affected when the mold is closed. Specifically, the cap 9 consists of two parts: the upper part is a top made of the same material as the mounting shell 8, and the lower part is a magnetic bottom, which can be removed using a magnet.

[0065] The movable component 6 slides horizontally within the mounting housing 8. A through-hole (connected to the placement slot 3) is provided on the side of the mounting housing 8 facing the placement slot 3 for the movable component 6 to pass through. A translation mechanism 7 is located within the mounting housing 8. Driven by the translation mechanism 7, the movable component 6 passes through the through-hole and is then inserted into or removed from the fixing slot 5 of the movable type block body 2.

[0066] The following is a description of translation mechanism 7:

[0067] The translation mechanism 7 includes a first lever 701 and a first return spring 702. Specifically, the first lever 701 is fixed to the top of the moving member 6 and located inside the mounting housing 8, with its upper end extending close to the cap 9, facilitating manual operation by the operator after removing the cap 9. One end of the first return spring 702 is connected to the side of the moving member 6 facing away from the placement groove 3, and the other end of the first return spring 702 is connected to the inner wall of the mounting housing 8. In its natural state, the first return spring 702 is in a horizontally extended state, applying a spring force to the moving member 6 towards the placement groove 3, causing the front end of the moving member 6 to extend out of the through-hole.

[0068] When assembling the movable type block body 2, first manually move the first lever 701 to move the moving member 6 away from the placement slot 3, overcoming the spring force of the first return spring 702, until the moving member 6 is completely retracted into the through opening. Then, place the movable type block body 2 into the placement slot 3 and press it down to overcome the spring force of the return mechanism 4, so that the movable type block body 2 is completely inserted into the placement slot 3. At this time, release the first lever 701, and the moving member 6 will reset under the action of the first return spring 702 and insert into the fixing slot 5 to complete the fixing. Finally, replace the cap 9.

[0069] When it is necessary to disassemble the movable type block body 2, the cap 9 is removed by the magnet and the first lever 701 is moved to make the moving component 6 exit the fixing groove 5; at this time, the movable type block body 2 is lifted upward by the spring mechanism 4 and can be directly removed.

[0070] With the above design, the disassembly and assembly of the movable type block body 2 can be completed simply by removing the magnetic cap 9 and manually moving the first lever 701. This can be done by a single person in just a few minutes, significantly improving the efficiency of movable type block replacement. Furthermore, the movable type block body 2 can be quickly replaced from the front of the mold side plate 1 without disassembling or flipping the mold side plate 1, simplifying the operation. At the same time, the overall structural design is simple and compact, without complex and redundant parts, effectively reducing the processing difficulty and production cost of parts, and ensuring stable adaptation to the needs of large-scale mass production.

[0071] Example 2: Please refer to Figures 9 to 11 This embodiment also proposes a movable type block fixing structure. The difference between this embodiment and Embodiment 1 is that:

[0072] The translation mechanism 7 includes a second lever 703 and a stop block 704. Specifically, the second lever 703 is fixed to the top of the moving member 6 and located inside the mounting housing 8, allowing the operator to manually move it after removing the cap 9 to drive the moving member 6 to move horizontally. The stop block 704 is detachably inserted into the mounting housing 8, and abuts against the side of the moving member 6 facing away from the placement slot 3 to mechanically limit the horizontal displacement of the moving member 6. To facilitate the insertion and removal of the stop block 704, an internal threaded hole is provided on the top surface of the stop block 704. This internal threaded hole can be threaded with an external bolt (such as an internal hex bolt). By screwing in the bolt and pulling upwards, the stop block 704 can be removed from the mounting housing 8.

[0073] When assembling the movable type block body 2, first manually move the second lever 703 to move the moving component 6 away from the placement slot 3 until the moving component 6 is fully retracted into the through opening. Then, place the movable type block body 2 into the placement slot 3 and press down to overcome the spring force of the spring mechanism 4, so that the movable type block body 2 is fully inserted into the placement slot 3. At this time, move the second lever 703 to insert the moving component 6 into the fixing slot 5, and then insert the stop block 704 into the mounting shell 8 to abut and limit the movement of the moving component 6. Finally, replace the cap 9.

[0074] When it is necessary to disassemble the movable type block body 2, after removing the cap 9 with the magnet, first remove the stop block 704, and then move the second lever 703 to make the moving component 6 exit the fixing groove 5; at this time, the movable type block body 2 will spring up under the action of the spring-back mechanism 4 and can be directly removed.

[0075] By adopting the above design, the mechanical limit of the stop block 704 replaces the elastic limit of the reset spring in Embodiment 1, which can avoid the positioning displacement problem of the moving component 6 caused by the weakening of the elastic force after long-term use of the spring. It is especially suitable for the high temperature and high pressure molding environment of tire molds and improves the long-term stability of the structure.

[0076] Example 3: Please refer to Figures 12 to 14 This embodiment also proposes a movable type block fixing structure. The difference between this embodiment and embodiments one and two is that:

[0077] The translation mechanism 7 includes a third lever 705 and a protrusion 706. The third lever 705 is fixed to the top of the moving member 6 and located inside the mounting housing 8, allowing the operator to directly drive the moving member 6 to reciprocate horizontally by manually moving the third lever 705 after removing the cap 9. The protrusion 706 is integrally formed on the bottom of the cap 9, and abuts against the side of the moving member 6 facing away from the placement groove 3, limiting the sliding of the moving member 6 away from the placement groove 3 through mechanical hard limiting.

[0078] When it is necessary to assemble the movable type block body 2, first manually move the third lever 705 to move the moving member 6 away from the placement slot 3 until the moving member 6 is completely retracted into the through opening. Then, place the movable type block body 2 into the placement slot 3 and press down to overcome the spring force of the spring mechanism 4, so that the movable type block body 2 is completely inserted into the placement slot 3; at this time, move the third lever 705 to insert the moving member 6 into the fixing slot 5. Finally, put the cap 9 back on, and the protrusion 706 integrated with the cap 9 extends into the mounting shell 8 and contacts the back of the moving member 6, completing the locking of the movable type block.

[0079] When it is necessary to disassemble the movable type block body 2, the cap 9 is removed by external magnet adsorption, and the protrusion 706 integrated with the cap 9 is simultaneously pulled out from the mounting shell 8, releasing the mechanical limit on the moving component 6; then, the third lever 705 is moved to make the moving component 6 exit the fixing groove 5; at this time, the movable type block body 2 bounces upward under the action of the spring mechanism 4, and can be directly taken out.

[0080] By adopting the above design, the protrusion 706 and the cap 9 are integrally formed, eliminating the need for the separate stop 704 in Embodiment 2. This not only simplifies the overall structure and reduces the workload of parts processing and assembly, but also reduces the risk of loss of independent parts or misalignment during assembly, thereby improving the structural integration.

[0081] Example 4: Please refer to Figures 15 to 17 This embodiment also proposes a movable type block fixing structure. The difference between this embodiment and embodiments one, two, and three is that:

[0082] The translation mechanism 7 includes first bolts 707 and second bolts 708 spaced apart along the horizontal direction. Both first bolts 707 and second bolts 708 are threaded to the mounting housing 8. A trapezoidal groove 10, wider at the top and narrower at the bottom, is formed on the top of the moving component 6. The trapezoidal groove 10 is located directly below the first bolts 707 and second bolts 708, and the slope angles of its two sides are both α. In this embodiment, both first bolts 707 and second bolts 708 are headless bolts (such as hexagonal headless bolts). A frustum is machined at the bottom of each headless bolt, and the angle between the generatrix of the frustum and the horizontal line is also α, perfectly matching the slope angle of the trapezoidal groove 10. When the headless bolt is screwed downwards, the side of the frustum can fit against the slope of the trapezoidal groove 10, driving the moving component 6 to slide horizontally through the inclined thrust.

[0083] When assembling the type block body 2, first use a screwdriver to rotate the first bolt 707, moving it upwards until its bottom frustum is completely disengaged from the trapezoidal groove 10. Then, rotate the second bolt 708, moving it downwards until its frustum contacts the slope of the trapezoidal groove 10 and applies a pushing force, causing the moving member 6 to slide away from the placement groove 3 until it is completely retracted into the through opening. Next, place the type block body 2 into the placement groove 3 and press it down to overcome the spring force of the spring mechanism 4, so that the type block body 2 is completely embedded in the placement groove 3 (at this time, the fixing groove 5 is aligned with the through opening). Then, rotate the second bolt 708, moving it upwards to disengage from the trapezoidal groove 10, and then rotate the first bolt 707, moving it downwards until its frustum contacts the slope of the trapezoidal groove 10 and applies a pushing force, causing the moving member 6 to slide closer to the placement groove 3 until it is inserted into the fixing groove 5; finally, replace the cap 9 to complete the assembly.

[0084] When it is necessary to disassemble the movable type block body 2, first remove the cap 9 by using the external magnet. Then, use a screwdriver to rotate the first bolt 707 to move it upward and disengage it from the trapezoidal groove 10; then rotate the second bolt 708 to move it downward, causing the moving component 6 to slide away from the placement groove 3 until it is completely removed from the fixing groove 5; at this time, the movable type block body 2 will spring up upward under the action of the spring-back mechanism 4 and can be directly removed.

[0085] With the above design, there is no need to manually move the lever; adjustment can be completed with just a screwdriver. This is suitable for installation scenarios with limited internal space, and it requires less strength from the operator, making operation more effortless.

[0086] Example 5: Please refer to Figures 18 to 22 This embodiment also proposes a movable type block fixing structure. The difference between this embodiment and embodiments one, two, three, and four is that:

[0087] The mold side plate 1 has a sliding groove 11 for the horizontal sliding of the movable component 6. The sliding groove 11 communicates with the placement groove 3, providing a horizontal channel for the movable component 6 to be subsequently inserted into the fixing groove 5. The movable component 6 has a first inclined surface 12 and a second inclined surface on the upper and lower sides of the end facing the placement groove 3, respectively. A second return spring 13 is connected to the side of the movable component 6 facing away from the placement groove 3. The end of the second return spring 13 away from the movable component 6 is connected to the inner wall of the sliding groove 11. In its natural state, the second return spring 13 is in a horizontally extended state. Through its elastic force, it pushes the movable component 6 towards the placement groove 3, so that the part of the movable component 6 facing the placement groove 3 extends into the placement groove 3.

[0088] After the movable type block body 2 is placed into the placement slot 3, during the downward pressing of the movable type block body 2, the bottom of the movable type block body 2 first contacts the first inclined surface 12. With the guiding force of the first inclined surface 12, the moving component 6 is pushed to overcome the elastic force of the second return spring 13 and automatically retract into the slide groove 11. As the movable type block body 2 continues to move down until the fixed slot 5 is horizontally aligned with the slide groove 11, the second return spring 13 returns to its extended state and pushes the moving component 6 to automatically extend out of the slide groove 11 and insert into the fixed slot 5, thereby completing the vertical limiting and locking of the movable type block body 2.

[0089] It is worth mentioning that in this embodiment, the surface of the movable component 6 is chrome-plated and smooth. When the movable type block body 2 applies a downward pushing force to the first inclined surface 12, the horizontal component of the pushing force is much greater than the sum of the frictional force of the movable component 6 and the inner wall of the slide groove 11 and the elastic force of the second return spring 13.

[0090] In embodiments one through four, the moving component 6 and the translation mechanism 7 are both housed within the mounting housing 8, and a magnetic cap 9 is also provided for ease of operation. However, in actual use, it was found that if the gap between the cap 9 and the mounting housing 8 is large, rubber can easily seep into the gap during tire vulcanization, forming flash and affecting the appearance quality of the tire sidewall. If the cap 9 and the mounting housing 8 are designed to fit tightly to avoid gaps, although this reduces the impact on the tire product, the cap 9 is difficult to remove later using magnetic attraction due to insufficient magnetic force. To solve this problem, the following design is proposed:

[0091] The translation mechanism 7 includes a block 709 that slides horizontally within a fixed groove 5. A linkage rod 7010 is fixed to the side of the block 709 facing away from the moving member 6. The linkage rod 7010 extends horizontally and movably passes through the movable type block body 2. A limiting block 7011 is fixed to the end of the linkage rod 7010 away from the block 709. An installation groove 14 is provided in the movable type block body 2 for the limiting block 7011 to slide horizontally.

[0092] A third return spring is fitted on the linkage rod 7010. One end of the third return spring is connected to the limiting block 7011, and the other end of the third return spring is connected to the inner wall of the mounting groove 14. In its natural state, the third return spring is in a horizontally extended state. Through its elastic force, it drives the limiting block 7011 to move away from the blocking block 709, so that the blocking block 709 retracts to the inner side of the fixing groove 5 (the side away from the moving member 6). At this time, the fixing groove 5 remains open, and the moving member 6 can be inserted normally.

[0093] It is worth mentioning that a first connecting rod 15 is hinged to the side of the limiting block 7011 facing away from the linkage rod 7010. A second connecting rod 16 is hinged to the end of the first connecting rod 15 away from the limiting block 7011. The end of the second connecting rod 16 away from the first connecting rod 15 is hinged to the inner wall of the mounting groove 14. A top block 17 is fixed on the inner wall of the placement groove 3. The top block 17 is located below the first connecting rod 15 and the second connecting rod 16, and its top surface is a smooth plane adapted to the pushing of the connecting rod.

[0094] When the first link 15 and the second link 16 cooperate to form a positive V-shaped structure (with the apex facing down), the block 709 is located inside the fixed groove 5.

[0095] When the first link 15 and the second link 16 cooperate to form an inverted V-shaped structure (the vertex faces upward and the included angle is greater than that of the regular V-shaped structure), and the vertex of the inverted V-shaped structure abuts against the inner top wall of the mounting groove 14, the block 709 is located on the outside of the fixed groove 5 (the side closer to the moving member 6), and the outer surface of the block 709 does not exceed the outer surface of the movable block body 2 facing the moving member 6.

[0096] Using the above design, when the movable type block body 2 needs to be assembled, after placing the movable type block body 2 in the placement groove 3, the movable type block body 2 is pressed down for the first time. Its bottom contacts the first inclined surface 12 of the moving member 6 and applies pressure, pushing the moving member 6 to overcome the elastic force of the second return spring 13 and retract into the slide groove 11. As the movable type block body 2 continues to move down until it is aligned with the slide groove 11 in the fixing groove 5, the second return spring 13 rebounds and pushes the moving member 6 to extend horizontally and automatically insert into the fixing groove 5, completing the quick locking of the movable type block.

[0097] It should be further explained that when the moving component 6 is inserted into the fixing slot 5 to initially lock the movable type block body 2, the top surface of the movable type block body 2 remains coplanar with the upper surface of the mold side plate 1. At this time, if a downward force is continued to be applied to the movable type block body 2, it can still be pushed further downward (reserving stroke for subsequent unlocking action). In this embodiment, for daily tire molding operation scenarios, the upward force applied by the spring mechanism 4 to the movable type block body 2 is not less than 50N; actual testing has verified that in actual application, the downward force applied by the tire substrate (such as rubber in the vulcanization process) to the movable type block body 2 does not exceed 20N. Therefore, it can be seen that during specific operations, the upward spring force on the movable type block body 2 is always greater than the downward pressure applied by the tire substrate, which can effectively prevent the movable type block body 2 from accidentally sliding down due to the pressure of the tire substrate, ensuring the structural stability and product accuracy of the tire molding process.

[0098] When it is necessary to disassemble the movable type block body 2, continue to press the movable type block body 2 downward until it abuts against the bottom of the placement groove 3; during this process, the top block 17 pushes the first connecting rod 15 and the second connecting rod 16 upward, so that the positive V-shaped structure formed by the two gradually unfolds to a collinear horizontal state (at this time, the blocking block 709 moves the maximum distance, and the outer surface of the blocking block 709 is coplanar with the outer surface of the movable type block body 2 to avoid jamming), while the moving component 6 retracts into the sliding groove 11; subsequently, the first connecting rod 15 and the second connecting rod 16 further rotate to form an inverted V-shaped structure, driving the blocking block 709 to retract inward a certain distance until the apex of the inverted V-shaped structure abuts against the inner top wall of the mounting groove 14, at which point the movable type block body 2 is in complete contact with the bottom wall of the placement groove 3.

[0099] Finally, release the movable type block body 2, which returns to its original position under the action of the spring-back mechanism 4. During this process, because the blocking block 709 has retracted inward, the moving component 6 will partially insert into the fixing slot 5, but under the guidance of the second inclined surface, the moving component 6 will automatically exit the fixing slot 5. The entire process does not require manual adjustment of the translation mechanism 7, and the fully automated operation can be triggered by only two presses, which significantly simplifies the disassembly and assembly process.

[0100] This embodiment directly eliminates the mounting shell 8 and cap 9, integrating the translation mechanism 7 inside the mold side plate 1 and the movable block body 2, completely eliminating external fitting gaps and preventing rubber from seeping in and forming flash during tire vulcanization, thus ensuring the precision of the tire sidewall appearance. Furthermore, the entire assembly and disassembly process can be completed with only "two presses," achieving fully automated operation without the need for special tools. A single person can complete the process in seconds, significantly improving operational efficiency compared to the manual adjustment process of the previous embodiment.

[0101] Example 6: This example also proposes a tire mold, including a movable block fixing structure as described in any one of Examples 1 to 5. By employing the mold side plate 1 and its movable block fixing structure as described in Examples 1 to 5, the tire mold of this example allows for quick replacement of the movable block body 2 according to the tread pattern requirements of different tire models. This balances structural stability and ease of operation, adapting to the mass production of various tire specifications and significantly reducing mold replacement and maintenance costs.

[0102] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0103] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable type block fixing structure, comprising a movable type block body movably disposed on a mold side plate, wherein the top surface of the mold side plate is provided with a placement groove adapted to the movable type block body, characterized in that, Also includes: A spring-back mechanism, located at the bottom of the placement slot, is used to apply an upward spring-back thrust to the movable type block body; A fixing groove is formed on the side wall of the movable type block body; A movable component, which is movably disposed in the mold side plate in the horizontal direction and adapted to the fixed groove; A translation mechanism is provided inside the mold side plate to drive the moving component to translate into or out of the fixed slot; when the moving component is embedded in the fixed slot, the top surface of the movable block body is coplanar with the upper surface of the mold side plate. The top surface of the mold side plate is detachably fitted with a mounting shell. The upper end of the mounting shell is open, and a cap is magnetically fixed to the upper end of the mounting shell. The upper surface of the cap is coplanar with the top surface of the mold side plate. The movable component slides horizontally within the mounting housing, and a through-hole is provided on the side of the mounting housing facing the placement groove for the movable component to pass through; the translation mechanism is located within the mounting housing. The mold side plate has a sliding groove for the horizontal sliding of the moving component, and the sliding groove is connected to the placement groove; the moving component has a first inclined surface and a second inclined surface on the upper and lower sides of the end facing the placement groove, respectively. A second return spring is connected to the side of the moving component facing away from the placement groove. The end of the second return spring away from the moving component is connected to the inner wall of the slide groove. In its natural state, the second return spring is in a horizontally extended state. The translation mechanism includes a block that slides horizontally in a fixed groove. A linkage rod is fixed to the side of the block that faces away from the moving component. The linkage rod extends horizontally and is movably inserted into the body of the movable type block. A limit block is fixed at the end of the linkage rod away from the block, and an installation groove for the limit block to slide horizontally is provided in the body of the movable type block; A third return spring is fitted on the linkage rod. One end of the third return spring is connected to the limiting block, and the other end of the third return spring is connected to the inner wall of the mounting groove. In its natural state, the third return spring is in a horizontally extended state so that the blocking block retracts to the inner side of the fixing groove.

2. The movable type fixing structure according to claim 1, characterized in that: The translation mechanism includes a first lever and a first return spring; The first push block is fixed to the top of the movable component and located inside the mounting shell; one end of the first return spring is connected to the side of the movable component facing away from the placement groove, and the other end of the first return spring is connected to the inner side wall of the mounting shell; in its natural state, the first return spring is in a horizontally extended state.

3. The movable type fixing structure according to claim 1, characterized in that: The translation mechanism includes a second lever and a stop; The second lever is fixed to the top of the movable component and located inside the mounting housing; the stop block is detachably inserted into the mounting housing, and the stop block abuts against the side of the movable component facing away from the placement groove.

4. The movable type fixing structure according to claim 1, characterized in that: The translation mechanism includes a third lever and a convex block; The third lever is fixed to the top of the movable component and located inside the mounting housing; the protrusion is integrally formed on the bottom of the cap, and the protrusion abuts against the side of the movable component facing away from the placement groove.

5. The movable type fixing structure according to claim 1, characterized in that: The translation mechanism includes a first bolt and a second bolt that are spaced apart along the horizontal direction; Both the first bolt and the second bolt are threaded to the mounting shell. A trapezoidal groove, wider at the top and narrower at the bottom, is provided on the top of the movable component. The trapezoidal groove is located directly below the first bolt and the second bolt.

6. The movable type fixing structure according to claim 1, characterized in that: The limiting block is hinged to a first connecting rod on the side opposite to the linkage rod, and a second connecting rod is hinged to the end of the first connecting rod away from the limiting block. The end of the second connecting rod away from the first connecting rod is hinged to the inner wall of the mounting groove. A top block is fixed on the inner wall of the placement slot, and the top block is located below the first connecting rod and the second connecting rod; When the first link and the second link cooperate to form a positive V-shaped structure, the block is located inside the fixed groove; When the first link and the second link cooperate to form an inverted V-shaped structure, and the apex of the inverted V-shaped structure abuts against the inner top wall of the mounting groove, the block is located outside the fixed groove, and the outer surface of the block does not exceed the outer surface of the movable block body facing the moving component.

7. A tire mold, comprising the movable block fixing structure as described in any one of claims 1-6.

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