Tire mold side plate and machining method

Abstract

The invention relates to the technical field of tire manufacturing, in particular to a tire mold side plate and a machining method. The tire mold side plate comprises a side plate body, a movable type block body and a limiting mechanism; a movable type groove matched with the movable type block body is formed in the top surface of the side plate body; a mounting groove matched with the limiting mechanism is further formed in the top surface of the side plate body; the limiting mechanism comprises a limiting shell fixed in the mounting groove, and a limiting execution piece capable of switching working states is arranged in the limiting shell; the side wall of the movable type block body is provided with a limiting groove matched with the end of the limiting execution piece. The limiting mechanism is firstly fixed in the mounting groove, then the movable type groove is machined, redundant materials on the side, facing the movable type groove, of the limiting shell are synchronously removed when the movable type groove is machined, the side walls of the limiting shell and the movable type groove naturally form a coplanar structure, the additional finishing procedure is omitted, precision damage caused by operation when a tool goes deep into the groove is avoided, and the machining efficiency is improved. Therefore, the fitting precision of the limiting mechanism and the movable type block body is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire manufacturing technology, in particular to a tire mold side plate and a processing method. BACKGROUND

[0002] The mold side plate is a core component of the tire mold. The top surface (i.e., the tire forming surface) is not only provided with a forming pattern that matches the tire sidewall profile, but also equipped with a movable block. The movable block can press the brand logo, specification parameters, production batch number and other authentication marks on the surface of the tire sidewall during tire vulcanization.

[0003] In the traditional tire mold structure, the movable block is mainly fixed by bolts, and the disassembly operation needs to be performed from the bottom surface of the mold side plate (i.e., the back surface of the mold). When disassembling, the entire mold needs to be disassembled first, and then the side plate is lifted and turned over by lifting equipment. After the back surface bolts are exposed, they are disassembled one by one. The entire process takes a long time, which seriously affects the tire production efficiency.

[0004] To solve the above problems, the company adds a limiting device to the top surface of the mold side plate (i.e., the front surface of the mold). The device usually includes a limiting shell fixed inside the side plate and a limiting executive component (such as a spring plunger, a buckle pin) inside the shell. By cooperating the limiting executive component with the limiting groove pre-set on the side wall of the movable block, the disassembly of the movable block can be completed directly from the front surface of the side plate, greatly shortening the disassembly time and avoiding the cumbersome process of mold disassembly and side plate turning. During processing, the mold side plate, the movable block body and the limiting device generally adopt the mode of "independent processing and assembly". First, the movable slot and the installation slot are milled on the side plate respectively. Then, the pre-fabricated limiting device is fixed in the installation slot. Finally, the movable block body is assembled into the movable slot.

[0005] During the processing stage, the limiting device is usually made to be coplanar with the side wall of the movable slot (if they are not coplanar, a through hole for the limiting executive component to pass through needs to be processed between the movable slot and the installation slot. However, the space in this area is narrow, and the processing tool cannot directly extend into the interior for operation, resulting in extremely high difficulty in processing the through hole). However, in order to ensure that the limiting device can closely fit with the movable block body later, the side wall of the limiting device facing the movable slot needs to be additionally trimmed by milling or polishing process to make it completely flush with the side wall of the movable slot. This not only increases the processing steps, but also easily causes damage to the forming surface of the movable slot or the limiting device due to tool collision with the slot wall, which cannot guarantee the trimming accuracy.

[0006] In addition, since the limiting device and the mold side plate are independently processed, the flatness accuracy of their top surfaces cannot be uniformly controlled, and after assembly, there may be a height difference. In order to ensure the flatness of the mold forming surface, additional trimming operations such as milling and polishing need to be performed on the top surfaces of the two, which not only requires repeated processing multiple times, but also may damage the original accuracy of the mold forming surface during the trimming process, thereby affecting the subsequent tire forming quality.

[0007] To this end, we propose a tire mold side plate and processing method to solve the above-mentioned drawbacks. SUMMARY

[0008] The purpose of the present application is to provide a tire mold side plate and processing method for solving the problem of the need for additional trimming of the side wall and top wall of the limiting device in the prior art, which cannot guarantee precision.

[0009] The present application is achieved by the following technical solutions: a tire mold side plate, 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 adapted to the movable block body, and the movable block body is placed in the movable slot; A mounting slot 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 slot; The limiting mechanism includes a limiting shell fixed in the mounting slot, and a limiting actuator capable of switching between working states is provided in the limiting shell; a limiting slot adapted to the end of the limiting actuator is provided on the side wall of the movable block body.

[0010] Optionally, the top surface of the side plate body, the top surface of the movable block body and the top surface of the limiting mechanism are coplanar.

[0011] Optionally, the mounting slot is located on one side of the movable slot, and the slot cavity of the mounting slot is in communication with the middle region of the movable slot.

[0012] Optionally, the top of the limiting shell is provided with an operation port, and a cover is detachably fixed in the operation port, and the top surface of the cover is coplanar with the top surface of the limiting shell.

[0013] Optionally, the limiting slot is provided on the middle side wall of the movable block body.

[0014] The present application also provides a processing method applicable to the above-mentioned tire mold side plate, comprising the following steps: S1, milling a mounting slot adapted to the shape of the limiting shell on the top surface of the side plate body, and making the mounting slot partially overlap with the preset distribution position of the movable block body; S2, fixing the limiting mechanism in the mounting slot, and making the limiting actuator in a non-limiting state; S3, considering the limiting mechanism and the side plate body as an integral structure, milling a movable slot adapted to the shape of the movable block body on the top surface of the integral structure, and simultaneously removing the redundant material on the side of the limiting shell towards the movable slot, so that the side wall of the limiting shell towards the movable slot is coplanar with the slot wall of the movable slot; S4, milling a limiting slot adapted to the end of the limiting actuator on the side wall of the movable block body; S5, the body of the movable block is installed into the movable block groove, and the limiting executive member is switched to the limiting state, so that the movable block body is fixed in the movable block groove; S6, the side plate body, the movable block body and the limiting mechanism are regarded as an integral structure, and the tire forming surface is precisely machined on the top surface of the integral structure, so that the top surface of the side plate body, the top surface of the movable block body and the top surface of the limiting mechanism are coplanar.

[0015] Optionally, in step S2, when the limiting executive member is in the non-limiting state, the end of the limiting executive member is completely inside the limiting shell.

[0016] Optionally, in step S5, when the limiting executive member is in the limiting state, the end of the limiting executive member is embedded in the limiting groove.

[0017] Compared with the prior art, the present application provides a tire mold side plate and a processing method, which has the following beneficial effects: 1. According to the present application, the limiting mechanism is first fixed in the mounting groove, and then the movable block groove is machined, and the redundant material on the side of the limiting shell facing the movable block groove is removed at the same time when the movable block groove is machined, so that the side walls of the two are naturally formed into a coplanar structure, thereby eliminating the need for additional finishing process and avoiding the precision damage caused by the tool operating into the groove, thereby ensuring the fitting precision of the limiting mechanism and the movable block body.

[0018] 2. According to the present application, the limiting mechanism and the movable block are first fixed, and then the top surfaces of the three are machined integrally, so that the top surfaces of the three are coplanar through one or a few machining processes, which not only eliminates the subsequent tedious surface finishing operation and reduces the machining process, labor and time cost, but also makes the top surfaces of the limiting mechanism and the side plate body consistent in flatness, thereby fundamentally ensuring the mold forming precision and shortening the production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the side plate body of the present application; Figure 3 It is a schematic diagram of the movable block body of the present application; Figure 4 It is a schematic diagram of the limiting mechanism of the present application; Figure 5 It is a flowchart of the present application.

[0020] In the figure: 1, side plate body; 2, movable block body; 3, limiting mechanism; 301, limiting shell; 302, limiting executive member; 4, movable block groove; 5, mounting groove; 6, limiting groove; 7, cover. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0022] Embodiment one: please refer to Figures 1 to 4 A tire mold side plate, comprising a side plate body 1, a movable block body 2 and a limiting mechanism 3.

[0023] The top surface (mold forming surface) of the side plate body 1 is provided with a movable slot 4 matched with the movable block body 2, the movable block body 2 can be embedded and placed in the movable slot 4, and the movable block body 2 can be detachably fixed with the movable slot 4 through the limiting mechanism 3, and the movable block body 2 can be replaced as needed subsequently.

[0024] Meanwhile, the top surface of the side plate body 1 is also provided with a mounting slot 5 matched with the limiting mechanism 3, and the limiting mechanism 3 is fixed in the mounting slot 5 by bolt connection or welding, so as to ensure that the limiting mechanism 3 is not loose after assembly. It should be particularly pointed out that when the movable block body 2 and the limiting mechanism 3 are installed in place, 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 are coplanar, which can ensure that the tire side is in close contact with the mold forming surface during the tire vulcanization process, so as to avoid the problems of steps or depressions on the tire side caused by the height difference of the top surfaces of the three, thereby reducing the product rejection rate.

[0025] In the embodiment, the limiting mechanism 3 comprises a limiting shell 301 fixed in the mounting slot 5, which provides assembly space for other components. A limiting actuator 302 (spring plunger, elastic pin, etc.) capable of switching working states is arranged in the limiting shell 301. Correspondingly, a limiting slot 6 matched with the end of the limiting actuator 302 is arranged on the side wall of the movable block body 2. When the limiting actuator 302 is in the limiting state, the end thereof can extend into the limiting slot 6, and the movable block body 2 is fixed in the movable slot 4 by mechanical clamping. When the movable block body 2 needs to be disassembled, the limiting actuator 302 is switched to the unlocking state, the end thereof is retracted and separated from the limiting slot 6, and the movable block body 2 can be directly taken out from the top surface of the side plate body 1.

[0026] Further, the mounting groove 5 is located on one side of the type groove 4, and the groove cavity of the mounting groove 5 is communicated with the middle region of the type groove 4. The communication structure can make the limiting execution member 302 in the limiting shell 301 directly opposite to the side wall of the type block body 2, without the need of additionally processing the through hole on the side plate body 1 for the limiting execution member 302 to pass through, and at the same time, the communication structure can ensure the alignment accuracy of the limiting execution member 302 and the limiting groove 6. In addition, the limiting groove 6 is arranged on the middle side wall of the type block body 2, which can make the fixing force of the limiting execution member 302 on the type block body 2 more uniform, and avoid the assembly gap caused by the stress deviation of the type block body 2.

[0027] It should be noted that the top of the limiting shell 301 is provided with an operation opening, and a cover 7 is detachably fixed in the operation opening (the cover 7 and the operation opening can be connected by magnetic attraction, which is convenient for disassembly). The top surface of the cover 7 is coplanar with the top surface of the limiting shell 301, which can ensure that the flatness of the mold forming surface is not damaged. In actual use, after the cover 7 is opened, the operator can maintain or replace the internal components of the limiting shell 301 through the operation opening, or directly manually switch the working state of the limiting execution member 302 through the operation opening.

[0028] Embodiment two: please refer to Figure 5 The embodiment provides a processing method suitable for the tire mold side plate in embodiment one, and includes the following steps. S1, a mounting groove 5 is milled on the top surface of the side plate body 1, and the mounting groove 5 is partially overlapped with the preset distribution position of the type block body 2, so that the part of the limiting shell 301 on the side of the type groove 4 is located in the preset mounting area of the type block body 2 after being fixed, and a structure basis is reserved for the subsequent integrated processing of the type groove 4.

[0029] It should be noted that before this step, the bottom surface and the side surface of the prefabricated side plate body 1 need to be precisely turned, so that the flatness and the perpendicularity meet the subsequent assembly requirements. The top surface of the side plate body 1 is roughly turned to remove the excess amount of the top surface, so as to speed up the subsequent top surface finishing work.

[0030] In this step, the milling of the mounting groove 5 adopts a numerical control programming mode. The preset distribution position of the type block body 2 and the assembly position of the limiting mechanism 3 have been accurately designed and positioned in the computer industrial software (such as CAD / CAM software). Through the precise machining of the numerical control equipment, the overlapping accuracy of the mounting groove 5 and the preset distribution position of the type block body 2 can be strictly guaranteed, and the position deviation caused by manual operation can be avoided.

[0031] S2, the limiting mechanism 3 is fixed in the mounting groove 5, and the limiting execution member 302 is in a non-limiting state; In step S2, when the limiting execution member 302 is in the non-limiting state, the end of the limiting execution member 302 is completely inside the limiting shell 301 and does not protrude from the side wall of the limiting shell 301 towards the side of the fount well 4, which can avoid damaging the limiting execution member 302 when the fount well 4 is subsequently processed, and at the same time, sufficient space is reserved for the processing of the fount well 4.

[0032] It should be noted that before this step, the bottom surface and the side surface of the prefabricated limiting shell 301 need to be precisely machined to ensure that the outer dimensions of the limiting shell 301 accurately match the installation groove 5, so that the limiting shell 301 can be smoothly installed in the installation groove 5 without assembly gap. The top surface of the limiting shell 301 is roughly machined to remove the excess amount of the top surface and improve the efficiency of the subsequent top surface precision machining operation.

[0033] S3, the limiting mechanism 3 and the side plate body 1 are regarded as an integral structure, and the fount well 4 which is adapted to the shape of the fount block body 2 is milled on the top surface of the integral structure, and at the same time, the redundant material on the side of the limiting shell 301 towards the fount well 4 is removed, so that the side wall of the limiting shell 301 towards the fount well 4 is coplanar with the groove wall of the fount well 4.

[0034] The coplanarity of the limiting shell 301 and the groove wall of the fount well 4 can ensure that the fount block body 2 can be smoothly placed into the fount well 4 without the need for subsequent adaptive trimming, greatly reducing the processing procedures.

[0035] S4, a limiting groove 6 which is adapted to the end of the limiting execution member 302 is milled on the side wall of the fount block body 2; It should be noted that before this step, the bottom surface and the side surface of the prefabricated fount block body 2 need to be milled to ensure that the outer dimensions of the fount block body 2 accurately match the fount well 4, so that the fount block body 2 can be smoothly embedded in the fount well 4 without assembly gap. Optionally, before assembly, the top surface of the fount block body 2 can be roughly milled to remove the excess amount of the top surface, which speeds up the subsequent precision machining operation of the top surface of the fount block body 2.

[0036] S5, the fount block body 2 is installed in the fount well 4, and the limiting execution member 302 is switched to the limiting state, so that the fount block body 2 is fixed in the fount well 4; In step S5, when the limiting execution member 302 is in the limiting state, the end of the limiting execution member 302 is embedded in the inside of the limiting groove 6, and the fixation of the fount block body 2 in the fount well 4 is realized through mechanical clamping. When the fount block is replaced, it is only necessary to switch the state of the limiting execution member 302 in the opposite direction, which is convenient to operate.

[0037] S6, the side plate body 1, the movable type block body 2 and the limiting mechanism 3 are regarded as an integral structure, and the tire forming surface is precisely machined on the top surface of the integral structure, so that the top surface of the side plate body 1, the top surface of the movable type block body 2 and the top surface of the limiting mechanism 3 are coplanar, and finally the outer surface precision (flatness, roughness) of the side plate body 1, the movable type block body 2 and the limiting mechanism 3 is completely consistent, meeting the appearance and size requirements of tire vulcanization molding.

[0038] It should be noted that since a pair of side plate bodies 1 usually has a plurality of movable type grooves 4, each movable type groove 4 is generally matched with two or more movable type block bodies 2, so after the top surface of a movable type block body 2 is precisely machined, another movable type block body 2 needs to be replaced to continue the precise machining of the movable type block body 2, so that 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 are flush. Because the machining speed is fast and the machining quality is high, it can be ensured that the top surfaces of all movable type blocks are flush with the top surface of the limiting mechanism 3 and the top surface of the side plate body 1 after machining, and because there is no replacement process and machining equipment, the side plate body 1 is not moved during machining, which can avoid precision errors caused by related work, so the surface of the side plate body 1 is not easily damaged during machining.

[0039] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0040] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tire mold side plate characterized by: The side plate body, the movable block body and the limiting mechanism are included. A movable block groove is formed on the top surface of the side plate body and is matched with the movable block body. An installation groove is formed on the top surface of the side plate body and is matched with the limiting mechanism. The limiting mechanism includes a limiting shell fixed in the installation groove, and a limiting actuator capable of switching working states is arranged in the limiting shell.

2. A tire mold side plate according to claim 1, wherein: A limiting groove is formed on the side wall of the movable block body and is matched with the end of the limiting actuator.

3. A tire mold side plate as defined in claim 1, wherein: The top surfaces of the side plate body, the movable block body and the limiting mechanism are arranged in the same plane.

4. A tire mold side plate as defined in claim 1, wherein: The installation groove is located on one side of the movable block groove, and the cavity of the installation groove is in communication with the middle region of the movable block groove.

5. A tire mold side plate as defined in claim 1, wherein: An operation port is formed on the top of the limiting shell, and a cover is detachably fixed in the operation port.

6. A method of working suitable for the side plate of a tyre mould according to any one of claims 1 to 5, characterised in that, The limiting groove is formed on the middle side wall of the movable block body. The method includes the following steps: S1, milling an installation groove matched with the shape of the limiting shell on the top surface of the side plate body, and making the installation groove partially overlap with the preset distribution position of the movable block body; S2, fixing the limiting mechanism in the installation groove and making the limiting actuator in a non-limiting state; S3, regarding the limiting mechanism and the side plate body as an integral structure, milling a movable block groove matched with the shape of the movable block body on the top surface of the integral structure, and simultaneously removing the redundant material on the side of the limiting shell facing the movable block groove, so that the side wall of the limiting shell facing the movable block groove is in the same plane with the groove wall of the movable block groove; S4, milling a limiting groove matched with the end of the limiting actuator on the side wall of the movable block body; S5, putting the movable block body into the movable block groove and switching the limiting actuator to a limiting state, so that the movable block body is fixed in the movable block groove; 7. A method of processing according to claim 6, wherein: S6, regarding the side plate body, the movable block body and the limiting mechanism as an integral structure, finishing the tire molding surface on the top surface of the integral structure, so that the top surfaces of the side plate body, the movable block body and the limiting mechanism are in the same plane.

8. A method of processing according to claim 6, wherein: 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. In step S5, when the limiting actuator is in a limiting state, the end of the limiting actuator is embedded in the limiting groove.

Images