Quick mold changing mechanism and tire vulcanizing machine

Abstract

The utility model discloses a quick mold changing mechanism and a tire vulcanizing machine, and belongs to the technical field of vulcanizing equipment. The quick mold changing mechanism is used for detachably connecting a mold with a vulcanizing machine base body and comprises a T-shaped pull rod and a rotation driving mechanism which are mounted on the vulcanizing machine base body; the T-shaped pull rod comprises a first end part, a first rod part and a second end part which are connected in sequence, and the first end part and the first rod part are connected to form a T shape; a T-shaped groove is formed in the connecting surface of the mold, and the first end part extends into the T-shaped groove; the rotation driving mechanism is in transmission connection with the second end part and drives the T-shaped pull rod to rotate so as to lock the mold and the vulcanizing machine base body or unlock the mold and the vulcanizing machine base body; the tire vulcanizing machine comprises the vulcanizing machine base body and the mold, and the vulcanizing machine base body is connected with the mold through the quick mold changing mechanism, so that the downtime of the vulcanizing machine is shortened, the production efficiency is improved, and the labor intensity of replacing the mold is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vulcanization equipment technology, specifically to a quick mold changing mechanism and a tire vulcanizing machine. Background Technology

[0002] Tire vulcanizing machines are used in the tire manufacturing process to provide suitable vulcanization temperature and pressure for the tire blank. During the vulcanization process, the tire vulcanizing machine uses molds to shape the tire blank. In order to reduce equipment operating costs, tire vulcanizing machines are usually set up to produce tires of different specifications and tread patterns. For different tire production, corresponding molds that match the tire need to be changed.

[0003] The current mainstream method for changing tire molds is as follows: after the tire mold is placed correctly, it is manually tightened to the T-block in the lower hot plate of the vulcanizing machine. Due to the generally narrow operating space and the high temperature in the vulcanizing workshop, mold changing is labor-intensive and the operating environment is harsh. Therefore, reducing the labor intensity of mold changing and improving production efficiency is a shared vision of both enterprises and operators. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a quick mold changing mechanism and a tire vulcanizing machine. The quick mold changing mechanism enables the tire vulcanizing machine to quickly change molds, is simple and convenient to operate, and improves production efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] On the one hand, this utility model provides a quick mold changing mechanism for detachably connecting a mold to a vulcanizing machine base; the quick mold changing mechanism includes a T-shaped tie rod and a rotation drive mechanism mounted on the vulcanizing machine base;

[0007] The T-shaped tie rod includes a first end, a first rod portion, and a second end connected in sequence, with the first end and the first rod portion connected in a T-shape.

[0008] The mold has a T-groove on its connecting surface, and the first end extends into the T-groove; the rotation drive mechanism is connected to the second end for transmission, driving the T-shaped tie rod to rotate so as to lock the mold and the vulcanizing machine base or to unlock it.

[0009] In the aforementioned quick mold changing mechanism, the rotation drive mechanism includes a rotation actuator and a sleeve; the sleeve is fitted around the outside of the second end and the two rotate synchronously; the rotation actuator can drive the sleeve to rotate.

[0010] In the aforementioned quick mold changing mechanism, the vulcanizing machine base is provided with a mounting hole that penetrates the vulcanizing machine base; the T-shaped tie rod is located inside the mounting hole, with both the first end and the second end extending outward from the mounting hole;

[0011] It also includes a limiting plate, which limits the position of the T-shaped tie rod in the length direction of the mounting hole.

[0012] In the aforementioned quick mold changing mechanism, the limiting plate includes a first limiting part and a second limiting part. The mating surfaces of the first limiting part and the second limiting part are respectively provided with a first clearance part and a second clearance part. After the first clearance part and the second clearance part are mated, a through hole is formed. The limiting plate is sleeved on the outside of the first rod part through the through hole.

[0013] In the aforementioned quick mold change mechanism, the T-shaped tie rod further includes a second rod portion, which is located between the first rod portion and the second end portion; a first limiting step surface is formed at the connection between the first rod portion and the second rod portion, and the first limiting step surface abuts against the limiting plate.

[0014] In the aforementioned quick mold change mechanism, the first rod and the second rod are cylinders, and the first rod and the second rod are coaxial.

[0015] The aforementioned quick mold change mechanism also includes an elastic element that applies a thrust toward the mold on the T-shaped tie rod.

[0016] In the aforementioned quick mold changing mechanism, the elastic element is a spring;

[0017] The T-shaped tie rod also includes a third rod portion, which is located between the first rod portion and the second end portion, and the elastic element is sleeved on the outside of the third rod portion.

[0018] In the above-mentioned quick mold changing mechanism, a second limiting step surface is formed at the connection between the third rod and the first rod, and the elastic element abuts against the second limiting step surface;

[0019] And / or, both the first rod portion and the third rod portion are cylinders, and are coaxially arranged.

[0020] On the other hand, this utility model provides a tire vulcanizing machine, including a vulcanizing machine base and a mold. The vulcanizing machine base is provided with the above-mentioned quick mold changing mechanism for detachably connecting the mold to the vulcanizing machine base.

[0021] The beneficial effects of this utility model are as follows:

[0022] The quick mold change mechanism utilizes T-shaped tie rods, limit plates, and a rotary drive mechanism to achieve rapid locking and unlocking of the mold and the vulcanizing machine base; it reduces vulcanizing machine downtime, improves production efficiency, and reduces heat loss; while saving energy, it significantly improves the degree of automation, reduces the labor intensity of operators, and improves the employee happiness index.

[0023] The T-shaped tie rod engages with the T-slot of the mold for locking and unlocking, allowing the quick mold changing mechanism in this solution to be directly used with the T-slot structure of ordinary manual mold changing, resulting in low operating costs and easy promotion and application.

[0024] The T-shaped tie rod has a reasonable structure, with the first end, first rod section, second rod section, third rod section, and second end section arranged sequentially. On the one hand, the limiting plate can cooperate with the first end, first rod section, and second rod section to achieve the limitation of the T-shaped tie rod in the length direction. On the other hand, the second limiting step surface formed by the second rod section and the third rod section provides the working surface for the elastic element. Overall, the structure of the T-shaped tie rod is simplified, and the connection reliability between the T-shaped tie rod and the vulcanizing machine base is also taken into account. After the T-shaped tie rod is assembled with the vulcanizing machine base, it has good stability for repeated use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the tire vulcanizing machine of this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0027] Figure 3 This is a schematic diagram of the T-shaped tie rod in the tire vulcanizing machine of this utility model;

[0028] Figure 4 This is a schematic diagram of the limiting plate in the tire vulcanizing machine of this utility model;

[0029] Figure 5 This is a schematic diagram of the mold in the tire vulcanizing machine of this utility model;

[0030] Figure 6 This is a schematic diagram of the T-shaped tie rod's interaction with the mold before and after rotation.

[0031] In the picture:

[0032] 100 - Lower heating plate; 110 - First mounting hole;

[0033] 200 - Insulation board; 210 - Second mounting hole;

[0034] 300 - Pallet; 310 - Third mounting hole;

[0035] 400 - Vulcanizing machine frame base; 410 - Fourth mounting hole;

[0036] 500 - Quick mold change mechanism; 510 - T-shaped tie rod; 511 - First end; 512 - First rod section; 513 - Second rod section; 514 - Third rod section; 515 - Second end; 520 - Limiting plate; 521 - First limiting part; 522 - Second limiting part; 523 - First clearance part; 524 - Second clearance part; 525 - Through hole; 526 - Connecting hole; 530 - Elastic element; 540 - Rotary actuator; 550 - Sleeve;

[0037] 600 - Mold; 610 - First groove; 620 - Second groove. Detailed Implementation

[0038] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0039] Please refer to Figure 1-6 The tire vulcanizing machine includes a mold 600 and a vulcanizing machine base. For different tire production needs, only the mold 600 needs to be replaced; the vulcanizing machine base does not require replacement. For example, the vulcanizing machine base includes, from top to bottom, a lower heating plate 100, a heat insulation plate 200, a support plate 300, and a vulcanizing machine frame base 400, etc. The mold 600 is located on the upper side of the lower heating plate 100 and is detachably connected to the vulcanizing machine base for easy replacement. It is understood that the vulcanizing machine base is not limited to the attached... Figure 1 The structure shown.

[0040] Please refer to Figure 1 , Figure 2 , Figure 3 This invention provides an embodiment of a quick mold changing mechanism 500, which is mounted on the base of a vulcanizing machine and enables efficient and fully automated mold changing 600. The quick mold changing mechanism 500 includes a T-shaped tie rod 510, a limiting plate 520, an elastic element 530, a rotation actuator 540, and a sleeve 550. The T-shaped tie rod 510 includes at least a first end 511, a first rod portion 512, and a second end 515, which are sequentially connected as a single unit. The vulcanizing machine base is provided with mounting holes that penetrate a portion of the vulcanizing machine base, so that the T-shaped tie rod 510 is located inside the mounting holes, and both the first end 511 and the second end 515 extend outward from the mounting holes. The first end 511 is used to connect to the mold 600, and the second end 515 is connected to a rotation drive mechanism that drives the T-shaped tie rod 510 to rotate. In this way, the end of the T-shaped tie rod 510 connected to the mold 600 and the operating end of the T-shaped tie rod 510 for rotation are located on both sides of the mounting holes, which facilitates operation.

[0041] For example, the mounting holes of the vulcanizing machine base include a first mounting hole 110, a second mounting hole 210, a third mounting hole 310, and a fourth mounting hole 410 respectively disposed at the connection positions of the lower heating plate 100, the heat insulation plate 200, the support plate 300, the vulcanizing machine frame base 400, and the T-shaped tie rod 510. The first mounting hole 110 and the third mounting hole 310 are stepped holes with a larger upper diameter and a smaller lower diameter to meet the assembly of the limiting plate 520 and the elastic element 530. The upper and lower diameters of the second mounting hole 210 and the fourth mounting hole 410 can be set according to the assembly requirements.

[0042] The limiting plate 520 is used to limit the T-shaped tie rod 510 within the mounting hole, that is, to limit the axial position of the T-shaped tie rod 510 within the mounting hole. Preferably, the limiting plate 520 is located at one end of the mounting hole near the mold 600 for easy installation; for example, the limiting plate 520 is located within the first mounting hole 110, and the upper end surface of the limiting plate 520 is flush with or below the upper side surface of the lower heating plate 100.

[0043] As one embodiment of the limiting plate 520, such as Figure 2 and Figure 4 As shown, the limiting plate 520 includes a first limiting portion 521 and a second limiting portion 522, both of which are plate-shaped independent entities. A first clearance portion 523 and a second clearance portion 524 are respectively provided at the mating surfaces of the first limiting portion 521 and the second limiting portion 522. After the first clearance portion 523 and the second clearance portion 524 are mated, a through hole 525 is formed, which penetrates the limiting plate 520. For example, the first clearance portion 523 is concave towards the inside of the second limiting portion 522 to form a semi-circular arc surface, and the second clearance portion 524 is concave towards the inside of the first limiting portion 521 to form a semi-circular arc surface. After the first clearance portion 523 and the second clearance portion 524 are mated, a circular through hole, i.e., the through hole 525, is formed.

[0044] The first rod portion 512 is located within the through hole 525. After the first limiting portion 521 and the second limiting portion 522 are fixed within the first mounting hole 110, they limit the upward movement of the T-shaped tie rod 510. The fixed connection between the first limiting portion 521 and the second limiting portion 522 and the first mounting hole 110 can be by bonding, interference fit, or other methods. Figure 4 As shown, both the first limiting part 521 and the second limiting part 522 are machined with connecting holes 526, and screws, bolts and other connecting parts located in the connecting holes 526 are used to achieve a fixed connection with the lower heating plate 100.

[0045] Furthermore, the T-shaped tie rod 510 also includes a second rod portion 513, which is located between the first rod portion 512 and the second end portion 515. In a direction perpendicular to the length of the first rod portion 512, the second rod portion 513 extends outward at least partially from the first rod portion 512, thereby forming a first limiting step surface at the connection between the first rod portion 512 and the second rod portion 513. The lower end face of the limiting plate 520 mates with and abuts against the first limiting step surface.

[0046] The elastic element 530 is located inside the third mounting hole 310. The elastic element 530 always applies an upward elastic force to the T-shaped tie rod 510, supporting the unimpeded rotation of the T-shaped tie rod 510. Preferably, the elastic element 530 is a spring. The T-shaped tie rod 510 also includes a third rod portion 514, which is located between the second rod portion 513 and the second end portion 515. A second limiting step surface is formed at the connection between the second rod portion 513 and the third rod portion 514. The elastic element 530 is sleeved on the outside of the third rod portion 514, with its top contacting the second limiting step surface and its lower end abutting against the inner wall of the third mounting hole 310.

[0047] Furthermore, the first rod portion 512, the second rod portion 513, and the third rod portion 514 are preferably cylindrical, and are coaxial. The outer diameter of the second rod portion 513 is larger than that of the first rod portion 512, forming a first annular limiting step surface at the connection between the first rod portion 512 and the second rod portion 513. The inner diameter of the through hole 525 is larger than the outer diameter of the first rod portion 512 and smaller than the outer diameter of the second rod portion 513, allowing the limiting plate 520 to abut against the first limiting step surface. The outer diameter of the third rod portion 514 is smaller than that of the second rod portion 513, forming a second annular limiting step surface at the connection between the second rod portion 513 and the third rod portion 514. The first end portion 511, the first rod portion 512, the second rod portion 513, the third rod portion 514, and the second end portion 515 can be integrally formed, resulting in good structural strength and ease of production and manufacturing.

[0048] The first end 511 is connected to the first rod 512 in a T-shape. When the through hole 525 of the limiting plate 520 is a round hole, the length of the first end 511 must be greater than the inner diameter of the through hole 525. When the through hole 525 is not a round hole, it is only necessary to ensure that the first end 511 and the second rod 513 cannot pass through the through hole 525 when the T-shaped pull rod 510 moves up and down in the mounting hole.

[0049] like Figure 2 , Figure 3 and Figure 5As shown, the bottom of the mold 600 is provided with a T-slot; specifically, the T-slot includes a first groove portion 610 and a second groove portion 620; the cross-sectional shape of the first groove portion 610 is adapted to the shape of the first end portion 511 and the first rod portion 512, allowing the first end portion 511 to pass through the first groove portion 610 and enter the second groove portion 620; the first end portion 511 can rotate within the second groove portion 620. Preferably, the cross-section of the second groove portion 620 is circular and its diameter is greater than the maximum length of the first end portion 511, and the cross-section of the first groove portion 610 is elongated. Figure 6 As shown, when the T-shaped tie rod 510 is in the 0° position, the first end 511 and the first rod portion 512 can extend into the T-shaped groove from the first groove portion 610. After extending into the groove, the first end 511 is located in the second groove portion 620, and the first rod portion 512 is in clearance fit with the first groove portion 610, allowing rotation. That is to say, when the mold 600 is installed or disassembled, the T-shaped tie rod 510 needs to be in the 0° position. After the T-shaped tie rod 510 is rotated to a set angle, for example, rotated 90° to reach the 90° position, in the width direction of the first groove portion 610, the outer dimension of the first end 511 is larger than the width of the first groove portion 610, and the first end 511 cannot pass through the first groove portion 610, so that the first end 511 is locked in the second groove portion 620; that is, the T-shaped tie rod 510 and the mold 600 reach a locked state, which can tighten the mold 600.

[0050] The sleeve 550 is located on the lower side of the vulcanizing machine frame base 400 and is fitted onto the second end 515. The sleeve 550 and the second end 515 of the T-shaped tie rod 510 are clearance-fitted, allowing the T-shaped tie rod 510 to move up and down relative to the sleeve 550 and for both to rotate synchronously. A rotary actuator 540 is fixed on the vulcanizing machine frame base 400, and the rotary actuator 540 is fixedly connected to the sleeve 550 using conventional fixing methods such as screws and clamps. The rotary actuator 540 is a conventional rotary actuator such as an externally purchased electric actuator; the connection method between the rotary actuator 540 and the sleeve 550 is also a conventional method and will not be described in detail here.

[0051] The rotary actuator 540 drives the sleeve 550 to rotate, thereby causing the T-shaped tie rod 510 to rotate by a set angle, such as 90°; Figure 6 As shown, by rotating the actuator 540 and the sleeve 550, the T-shaped tie rod 510 can switch back and forth between the 0° and 90° positions, thereby allowing the T-shaped tie rod 510 to extend into and out of the T-groove at the bottom of the mold 600 and to lock the mold 600. The sleeve 550 is clearance-fitted with the second end 515, which does not hinder the free up-and-down movement of the T-shaped tie rod 510; preferably, the cross-section of the second end 515 is polygonal, such as rectangular; and the contour of the inner hole of the sleeve 550 is adapted to the shape of the second end 515.

[0052] The installation and replacement operation of mold 600 is as follows:

[0053] When the T-shaped tie rod 510 is in the 0° position, the mold 600 can be placed directly on the surface of the lower heating plate 100, and the T-shaped tie rod 510 enters the T-slot of the mold 600; the rotating actuator 540 is activated, driving the sleeve 550, which in turn drives the T-shaped tie rod 510 to rotate 90° so that the T-shaped tie rod 510 reaches the 90° position, thus tightening the mold 600;

[0054] When changing mold 600, the rotating actuator 540 first drives the sleeve 550 to rotate. After the T-shaped tie rod 510 and the sleeve 550 rotate to the 0° position in sync, the mold 600 can be easily removed for replacement.

[0055] In the vertical direction, the first end 511 and the second groove 620 are in clearance fit. For example, the size of the clearance between the first end 511 and the second groove 620 can be determined by reasonably setting the thickness of the limiting plate 520, the length of the first rod 512, and the depth of the first groove 610. Multiple T-shaped tie rods 510 together limit the mold 600 at different parts to ensure that the mold 600 is in a reliable locked state after the T-shaped tie rods 510 rotate to a 90° position. When the mold 600 is installed or replaced, since no external force acts on the mold 600, the mold 600 maintains contact with the lower hot plate 100 only under its own weight. The upward elastic force applied by the elastic element 530 to the T-shaped tie rod 510 can make the first end 511 of the T-shaped tie rod 510 and the second groove 620 have a suitable gap. The rotational resistance generated by the relative contact between the two is small, and the T-shaped tie rod 510 can rotate under a small driving force.

[0056] It should be noted that the rotation angle of the T-shaped tie rod 510 when switching between the two states of disassembling and assembling the mold 600 and locking the mold 600 is not limited to 90°, and can be set to any other angle as needed.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick mold changing mechanism for detachably connecting a mold (600) to a vulcanizing machine base; characterized in that, The quick mold changing mechanism includes a T-shaped tie rod (510) and a rotation drive mechanism installed on the vulcanizing machine base; The T-shaped tie rod (510) includes a first end (511), a first rod portion (512), and a second end (515) connected in sequence, wherein the first end (511) and the first rod portion (512) are connected in a T-shape; The mold (600) has a T-groove on its connecting surface, and the first end (511) extends into the T-groove; the rotation drive mechanism is connected to the second end (515) and drives the T-shaped pull rod (510) to rotate, thereby locking the mold (600) and the vulcanizing machine base or unlocking it.

2. The quick mold changing mechanism according to claim 1, characterized in that, The rotation drive mechanism includes a rotation actuator (540) and a sleeve (550); the sleeve (550) is sleeved on the outside of the second end (515) and the two rotate synchronously; the rotation actuator (540) is used to drive the sleeve (550) to rotate.

3. The quick mold changing mechanism according to claim 1, characterized in that, The vulcanizing machine base is provided with mounting holes that penetrate the vulcanizing machine base; the T-shaped tie rod (510) is located inside the mounting holes, and the first end (511) and the second end (515) both extend out of the mounting holes; It also includes a limiting plate (520) that limits the position of the T-shaped tie rod (510) in the length direction of the mounting hole.

4. The quick mold changing mechanism according to claim 3, characterized in that, The limiting plate (520) includes a first limiting part (521) and a second limiting part (522). The mating surfaces of the first limiting part (521) and the second limiting part (522) are respectively provided with a first clearance part (523) and a second clearance part (524). After the first clearance part (523) and the second clearance part (524) are mated, a through hole (525) is formed. The limiting plate (520) is sleeved on the outside of the first rod part (512) through the through hole (525).

5. A quick mold changing mechanism according to claim 4, characterized in that, The T-shaped tie rod (510) further includes a second rod portion (513), which is located between the first rod portion (512) and the second end portion (515); a first limiting step surface is formed at the connection between the first rod portion (512) and the second rod portion (513), and the first limiting step surface abuts against the limiting plate (520).

6. The quick mold changing mechanism according to claim 5, characterized in that, The first rod portion (512) and the second rod portion (513) are cylinders, and the first rod portion (512) and the second rod portion (513) are coaxial.

7. A quick mold changing mechanism according to claim 1, characterized in that, It also includes an elastic element (530) that applies a thrust toward the mold (600) on the T-shaped tie rod (510).

8. A quick mold changing mechanism according to claim 7, characterized in that, The elastic element (530) is a spring; The T-shaped tie rod (510) also includes a third rod portion (514), which is located between the first rod portion (512) and the second end portion (515), and the elastic element (530) is sleeved on the outside of the third rod portion (514).

9. The quick mold changing mechanism according to claim 8, characterized in that, A second limiting step surface is formed at the connection between the third rod portion (514) and the first rod portion (512), and the elastic element (530) abuts against the second limiting step surface; And / or, the first rod portion (512) and the third rod portion (514) are both cylinders, and are coaxially arranged.

10. A tire vulcanizing machine, characterized in that, It includes a vulcanizing machine base and a mold (600), wherein the vulcanizing machine base is provided with a quick mold changing mechanism as described in any one of claims 1-9, for detachably connecting the mold (600) to the vulcanizing machine base.

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