Tire mold side plate and method of machining

Abstract

The present application relates to the technical fields of tire manufacturing, in particular to a tire mold side plate and a processing method, comprising a side plate body, a movable block body and a limiting mechanism; the top surface of the side plate body is provided with a movable slot matched with the movable block body; the top surface of the side plate body is also provided with an installation slot matched with the limiting mechanism; the limiting mechanism comprises a limiting shell fixed in the installation slot, and a limiting execution member capable of switching working states is arranged in the limiting shell; the side wall of the movable block body is provided with a limiting slot matched with the end of the limiting execution member; the present application fixes the limiting mechanism in the installation slot first, and then processes the movable slot; when the movable slot is processed, the excess material on the side of the limiting shell facing the movable slot is removed synchronously, so that the side walls of the two naturally form a coplanar structure, the additional finishing process is saved, the precision damage caused by the operation of the tool into the slot is avoided, and the fitting precision of the limiting mechanism and the movable block body is ensured.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, specifically to a tire mold side plate and its processing method. Background Technology

[0002] The mold side plate is a core component of the tire mold. Its top surface (i.e. the tire forming surface) not only has forming patterns that match the tire sidewall contour, but also has movable type blocks. These movable type blocks can press brand logos, specifications, production batch numbers and other certification marks onto the tire sidewall surface during tire vulcanization molding.

[0003] In traditional tire mold structures, the movable blocks are mainly fixed by bolts, and disassembly and assembly operations must be carried out from the bottom surface of the mold side plate (i.e., the back of the mold). During disassembly, the entire mold must be disassembled first, and then the side plate must be lifted and flipped using lifting equipment to expose the bolts on the back before disassembling them one by one. The entire process is time-consuming and seriously affects tire production efficiency.

[0004] To address the aforementioned issues, our company has added a limiting device to the top surface of the mold side plate (i.e., the mold front). This device typically includes a limiting shell fixed within the side plate, and limiting actuators (such as spring plungers or snap pins) within the shell. By engaging with the limiting slots pre-set in the side wall of the type block, the type block can be directly assembled and disassembled from the front of the side plate, significantly reducing assembly and disassembly time and avoiding the cumbersome processes of mold disassembly and side plate flipping. During processing, the mold side plate, type block body, and limiting device generally adopt a "separately processed and then assembled" approach. First, type slots and mounting slots are milled into the side plate, then the pre-fabricated limiting device is fixed in the mounting slot, and finally the type block body is assembled into the type slot.

[0005] During the manufacturing stage, the side wall of the limiting device facing the type slot is usually made coplanar with the slot wall. (If they are not coplanar, a through-hole for the limiting actuator to pass through needs to be machined between the type slot and the mounting slot. However, this area is narrow, making it difficult for machining tools to directly reach inside, resulting in extremely high machining difficulty for the through-hole.) However, to ensure that the limiting device fits tightly with the type block body, the side wall of the limiting mechanism facing the type slot needs to be milled or ground to make it completely flush with the type slot side wall. This not only increases the number of machining steps but also makes it easy for the tool to collide with the slot wall, causing damage to the forming surface of the type slot or the limiting device, and compromising the finishing accuracy.

[0006] Furthermore, since the limiting device and the mold side plate are machined independently, it is difficult to uniformly control the flatness accuracy of their top surfaces, which can easily lead to height differences after assembly. To ensure the flatness of the mold forming surface, additional milling and grinding operations are required on the top surfaces of both. This not only requires repeated processing but may also damage the original accuracy of the mold forming surface due to excessive cutting of the component surface during the finishing process, thereby affecting the subsequent tire forming quality.

[0007] To address these shortcomings, we propose a tire mold side plate and processing method. Summary of the Invention

[0008] The purpose of this invention is to provide a tire mold side plate and a processing method to solve the problem mentioned in the background art that the side wall and top wall of the limiting device need to be additionally repaired, which cannot guarantee the accuracy.

[0009] The present invention is achieved through the following technical solution: a tire mold side plate, comprising a side plate body, a movable block body, and a limiting mechanism;

[0010] The top surface of the side plate body is provided with a movable type groove that is adapted to the movable type block body, and the movable type block body is placed in the movable type groove;

[0011] A mounting groove adapted to the limiting mechanism is also provided on the top surface of the side plate body, and the limiting mechanism is fixed in the mounting groove;

[0012] The limiting mechanism includes a limiting shell fixed in the mounting groove, and a limiting actuator capable of switching working states is provided in the limiting shell; a limiting groove adapted to the end of the limiting actuator is provided on the side wall of the movable block body.

[0013] Optionally, the top surface of the side plate body, the top surface of the movable type block body, and the top surface of the limiting mechanism are arranged on the same plane.

[0014] Optionally, the mounting groove is located on one side of the type slot, and the cavity of the mounting groove is connected to the middle area of ​​the type slot.

[0015] Optionally, the top of the limiting shell is provided with an operating port, and a cover is detachably fixed inside the operating port. The top surface of the cover is coplanar with the top surface of the limiting shell.

[0016] Optionally, the limiting groove is formed on the middle side wall of the movable type block body.

[0017] The present invention also provides a processing method applicable to the above-mentioned tire mold side plate, comprising the following steps:

[0018] S1. Mill a mounting groove on the top surface of the side plate body that matches the shape of the limiting shell, and make the mounting groove partially overlap with the preset distribution position of the movable block body.

[0019] S2. Fix the limiting mechanism in the mounting groove and put the limiting actuator in a non-limiting state;

[0020] S3. Treat the limiting mechanism and the side plate body as an integrated structure. Mill out a type groove on the top surface of the integrated structure that matches the shape of the type block body. Simultaneously remove the redundant material on the side of the limiting shell facing the type groove so that the side wall of the limiting shell facing the type groove is coplanar with the groove wall of the type groove.

[0021] S4. Mill a limiting groove on the side wall of the movable type block body that matches the end of the limiting actuator;

[0022] S5. Insert the movable type block body into the movable type slot and switch the limit actuator to the limit state so that the movable type block body is fixed in the movable type slot.

[0023] S6. Treat the side plate body, the movable type block body, and the limiting mechanism as a single structure, and precision machine the tire forming surface on the top surface of the single structure so that the top surface of the side plate body, the top surface of the movable type block body, and the top surface of the limiting mechanism are coplanar.

[0024] Optionally, in step S2, when the limiting actuator is in a non-limiting state, the end of the limiting actuator is completely inside the limiting shell.

[0025] Optionally, in step S5, when the limiting actuator is in the limiting state, the end of the limiting actuator is embedded inside the limiting groove.

[0026] Compared with the prior art, the present invention provides a tire mold side plate and a processing method, which has the following beneficial effects:

[0027] 1. The present invention uses a process of first fixing the limiting mechanism in the mounting groove and then processing the movable type groove. During the processing of the movable type groove, redundant material on the side of the limiting shell facing the movable type groove is removed simultaneously, so that the side walls of the two naturally form a coplanar structure. This eliminates the need for additional finishing processes and avoids precision damage caused by tools being inserted into the groove, thereby ensuring the fitting accuracy between the limiting mechanism and the movable type block body.

[0028] 2. The present invention adopts a process of first fixing the limiting mechanism and the movable type block, and then processing the top surfaces of the three as a whole. The top surfaces of the three can be made coplanar through one or fewer processing steps, which not only saves the subsequent tedious surface finishing work and reduces processing steps and labor and time costs, but also ensures that the flatness of the top surfaces of the limiting mechanism and the side plate body is consistent, fundamentally guaranteeing the molding accuracy of the mold and shortening the production cycle. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the side plate body of the present invention;

[0031] Figure 3 This is a schematic diagram of the movable type block body of the present invention;

[0032] Figure 4 This is a schematic diagram of the limiting mechanism of the present invention;

[0033] Figure 5 This is a flowchart of the present invention.

[0034] In the diagram: 1. Side panel body; 2. Movable block body; 3. Limiting mechanism; 301. Limiting shell; 302. Limiting actuator; 4. Movable block groove; 5. Mounting groove; 6. Limiting groove; 7. Cover. Detailed Implementation

[0035] 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.

[0036] Example 1: Please refer to Figures 1 to 4 A tire mold side plate includes a side plate body 1, a movable block body 2, and a limiting mechanism 3.

[0037] The top surface (mold forming surface) of the side plate body 1 is provided with a movable type groove 4 that is adapted to the movable type block body 2. The movable type block body 2 can be embedded in the movable type groove 4 and can be detachably fixed to the movable type groove 4 through the limiting mechanism 3. The movable type block body 2 can be replaced as needed in the future.

[0038] Meanwhile, an installation groove 5 adapted to the limiting mechanism 3 is also provided on the top surface of the side plate body 1. The limiting mechanism 3 is fixed in the installation groove 5 by bolt connection or welding to ensure that the limiting mechanism 3 is not loose after assembly. It should be noted that when the movable block body 2 and the limiting mechanism 3 are installed in place, the top surfaces of the side plate body 1, the movable block body 2 and the limiting mechanism 3 are set together, which can ensure that the tire sidewall is in close contact with the mold forming surface during the tire vulcanization process, avoiding the problem of steps or depressions on the tire sidewall caused by the height difference of the three top surfaces, thereby reducing the product scrap rate.

[0039] In this embodiment, the limiting mechanism 3 includes a limiting shell 301 fixed in the mounting groove 5, providing assembly space for other components. A limiting actuator 302 (spring plunger, elastic pin, etc.) capable of switching working states is provided within the limiting shell 301. Correspondingly, a limiting groove 6 adapted to the end of the limiting actuator 302 is provided on the side wall of the movable type block body 2. When the limiting actuator 302 is in the limiting state, its end can extend into the limiting groove 6, and the movable type block body 2 is fixed in the movable type groove 4 through mechanical engagement. When it is necessary to disassemble the movable type block body 2, the limiting actuator 302 is switched to the unlocked state, its end retracts and disengages from the limiting groove 6, and the movable type block body 2 can be directly removed from the top surface of the side plate body 1.

[0040] Furthermore, the mounting groove 5 is located on one side of the type slot 4, and the cavity of the mounting groove 5 is connected to the middle area of ​​the type slot 4. This connection structure allows the limiting actuator 302 inside the limiting shell 301 to directly face the side wall of the type block body 2, eliminating the need for additional through-holes on the side plate body 1 for the limiting actuator 302 to pass through, while ensuring the alignment accuracy between the limiting actuator 302 and the limiting groove 6. In addition, the limiting groove 6 is opened on the middle side wall of the type block body 2. This position allows the fixing force of the limiting actuator 302 on the type block body 2 to be more uniform, avoiding assembly gaps caused by force displacement of the type block body 2.

[0041] It should be noted that the top of the limiting shell 301 has an operating port, and a cover 7 is detachably fixed inside the operating port (the cover 7 and the operating port can be magnetically connected for easy disassembly). The top surface of the cover 7 is coplanar with the top surface of the limiting shell 301 to ensure that the flatness of the mold forming surface is not damaged. In actual use, after opening the cover 7, the operator can inspect or replace the internal components of the limiting shell 301 through the operating port, and can also directly switch the working state of the limiting actuator 302 manually through the operating port.

[0042] Example 2: Please refer to Figure 5 This embodiment proposes a processing method applicable to the tire mold side plate in Embodiment 1, comprising the following steps:

[0043] S1. Mill an installation groove 5 on the top surface of the side plate body 1 that matches the shape of the limiting shell 301, and make the installation groove 5 partially overlap with the preset distribution position of the movable type body 2, so as to ensure that after the limiting shell 301 is fixed, part of its material facing the movable type groove 4 is located in the preset installation area of ​​the movable type body 2, thus reserving a structural foundation for the subsequent integrated processing of the movable type groove 4.

[0044] It should be added that, before this step, the bottom and sides of the prefabricated side panel body 1 need to be precision machined to ensure that its flatness and perpendicularity meet the requirements of subsequent assembly. The top surface of the side panel body 1 should also be rough machined to remove excess material, thus speeding up the subsequent finishing work on the top surface.

[0045] In this step, the milling of the mounting slot 5 is carried out using CNC programming mode. The preset distribution position of the movable type block body 2 and the assembly position of the limiting mechanism 3 have been precisely designed and positioned in computer industrial software (such as CAD / CAM software). Through the precision machining of CNC equipment, the overlap accuracy of the mounting slot 5 and the preset distribution position of the movable type block body 2 can be strictly guaranteed, avoiding positional deviations caused by manual operation.

[0046] S2. Fix the limiting mechanism 3 in the mounting groove 5 and put the limiting actuator 302 in a non-limiting state;

[0047] In step S2, when the limiting actuator 302 is in a non-limited state, the end of the limiting actuator 302 is completely inside the limiting shell 301 and does not protrude from the side wall of the limiting shell 301 facing the movable type slot 4. This can prevent damage to the limiting actuator 302 during subsequent processing of the movable type slot 4, and at the same time reserve sufficient space for processing the movable type slot 4.

[0048] It should be noted that before this step, the bottom and sides of the prefabricated limiting shell 301 need to be precision machined to ensure that the outer dimensions of the limiting shell 301 are precisely matched with the mounting groove 5, so that it can be smoothly installed into the mounting groove 5 without assembly gaps. The top surface of the limiting shell 301 should also be rough machined to remove excess material and improve the efficiency of subsequent top surface finishing operations.

[0049] S3. Treat the limiting mechanism 3 and the side plate body 1 as an integrated structure. Mill out the movable type groove 4 on the top surface of the integrated structure to match the shape of the movable type block body 2. Simultaneously remove the redundant material on the side of the limiting shell 301 facing the movable type groove 4 so that the side wall of the limiting shell 301 facing the movable type groove 4 is coplanar with the groove wall of the movable type groove 4.

[0050] The coplanarity between the limiting shell 301 and the groove wall of the movable type slot 4 ensures that the movable type block body 2 can be smoothly placed into the movable type slot 4 without subsequent adaptation adjustments, greatly reducing the processing steps.

[0051] S4. Mill a limiting groove 6 on the side wall of the movable type block body 2 to fit the end of the limiting actuator 302;

[0052] It should be added that, before this step, the bottom and sides of the prefabricated movable type block body 2 need to be milled to ensure that the outer dimensions of the movable type block body 2 are precisely matched with the movable type slot 4, so that it can be smoothly inserted into the movable type slot 4 without assembly gaps. Optionally, before assembly, the top surface of the movable type block body 2 can be rough milled to remove excess material on the top surface, which speeds up the subsequent precision turning operation of the top surface of the movable type block body 2.

[0053] S5. Insert the movable type block body 2 into the movable type slot 4, and switch the limit actuator 302 to the limit state so that the movable type block body 2 is fixed in the movable type slot 4.

[0054] In step S5, when the limit actuator 302 is in the limit state, the end of the limit actuator 302 is embedded in the limit groove 6, and the movable type block body 2 is fixed in the movable type groove 4 by mechanical engagement. When replacing the movable type block in the future, it is only necessary to reverse the state of the limit actuator 302, which is convenient to operate.

[0055] S6. Treat the side plate body 1, the movable block body 2, and the limiting mechanism 3 as an integrated structure. Machine the tire forming surface on the top surface of the integrated structure to make the top surface of the side plate body 1, the top surface of the movable block body 2, and the top surface of the limiting mechanism 3 coplanar. This ensures that the outer surface precision (flatness and roughness) of the side plate body 1, the movable block body 2, and the limiting mechanism 3 are completely consistent, meeting the appearance and dimensional requirements of tire vulcanization molding.

[0056] It should be added that, since a side plate body 1 typically has multiple movable type slots 4, and each movable type slot 4 is generally matched with two or more movable type block bodies 2, after finishing the top surface of one movable type block body 2, it is necessary to replace it with another movable type block body 2 and continue finishing the movable type block body 2 to make the top surface of the movable type block body 2, the top surface of the limiting mechanism 3, and the top surface of the side plate body 1 flush. Because the machining speed is fast and the machining quality is high, it can be ensured that the top surface of all movable type blocks is flush with the top surface of the limiting mechanism 3 and the top surface of the side plate body 1 after machining. Moreover, since there is no change of process or machining equipment, the side plate body 1 is not moved during the machining process, which can avoid the accuracy error caused by related work. Therefore, it is not easy to damage the surface of the side plate body 1 during the machining process.

[0057] 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.

[0058] 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 processing method for the side plate of a tire mold, characterized in that: The tire mold side plate includes the side plate body, the movable block body, and the limiting mechanism; The top surface of the side plate body is provided with a movable type groove that is adapted to the movable type block body, and the movable type block body is placed in the movable type groove; A mounting groove adapted to the limiting mechanism is also provided on the top surface of the side plate body, and the limiting mechanism is fixed in the mounting groove; The limiting mechanism includes a limiting shell fixed in the mounting groove, and a limiting actuator capable of switching working states is provided in the limiting shell; a limiting groove adapted to the end of the limiting actuator is provided on the side wall of the movable block body. The top surface of the side plate body, the top surface of the movable type block body, and the top surface of the limiting mechanism are coplanar. The mounting groove is located on one side of the movable type slot, and the cavity of the mounting groove is connected to the middle area of ​​the movable type slot. The top of the limiting shell is provided with an operation port, and a cover is detachably fixed inside the operation port. The top surface of the cover is coplanar with the top surface of the limiting shell. The limiting groove is formed on the middle side wall of the movable type block body; The processing method includes the following steps: S1. Mill a mounting groove on the top surface of the side plate body that matches the shape of the limiting shell, and make the mounting groove partially overlap with the preset distribution position of the movable block body. S2. Fix the limiting mechanism in the mounting groove and put the limiting actuator in a non-limiting state; S3. Treat the limiting mechanism and the side plate body as an integrated structure. Mill out a type groove on the top surface of the integrated structure that matches the shape of the type block body. Simultaneously remove the redundant material on the side of the limiting shell facing the type groove so that the side wall of the limiting shell facing the type groove is coplanar with the groove wall of the type groove. S4. Mill a limiting groove on the side wall of the movable type block body that matches the end of the limiting actuator; S5. Insert the movable type block body into the movable type slot and switch the limit actuator to the limit state so that the movable type block body is fixed in the movable type slot. S6. Treat the side plate body, the movable type block body, and the limiting mechanism as a single structure, and precision machine the tire forming surface on the top surface of the single structure so that the top surface of the side plate body, the top surface of the movable type block body, and the top surface of the limiting mechanism are coplanar.

2. The processing method according to claim 1, characterized in that: In step S2, when the limiting actuator is in a non-limiting state, the end of the limiting actuator is completely inside the limiting shell.

3. The processing method according to claim 1, characterized in that: In step S5, when the limiting actuator is in the limiting state, the end of the limiting actuator is embedded inside the limiting groove.

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