Stroke guiding tire mold limiting structure

Abstract

The utility model provides a stroke guiding tire mold limiting structure which comprises a limiting convex block arranged on an upper cover, the limiting convex block is clamped in a sliding groove in the inner side of a middle sleeve at the bottom of an upper heating plate of a vulcanizing machine in a sliding mode, an installation frame is arranged on the upper cover, a lead screw is arranged on the installation frame, and the top of the lead screw penetrates through a hole in the upper heating plate of the vulcanizing machine and extends out. A rotary knob is arranged on the lead screw, the lead screw is further sleeved with a check ring in a sliding mode, and a buffering piece is arranged between the check ring and the rotary knob. The limiting structure can buffer and absorb energy for movement of the upper hot plate of the vulcanizing machine through the buffer piece, and the limiting convex block is prevented from directly impacting the inner side of the sliding groove, so that part displacement or looseness caused by complete transmission of impact force to the whole mold during mold opening is effectively prevented, meanwhile, the operation of the mold and the function of the original limiting structure are not influenced, and the service life of the mold is prolonged. And the maintenance and adjustment frequency of each part is reduced.

Description

A stroke-guided tire mold limiting structure Technical Field

[0001] This utility model relates to the field of tire mold technology, specifically to a stroke-guided tire mold limiting structure. Background Technology

[0002] With the rapid development of the automotive industry, the performance requirements for tires are constantly increasing, including higher wear resistance, better grip, and a more comfortable driving experience. This has prompted tire manufacturers to continuously improve tire design and develop new tire structures and tread patterns. Against this backdrop, flexible molds for automotive tires have emerged. Through their unique structural design, flexible molds allow for the flexible movement of all mold components after tire molding, facilitating smooth tire demolding and significantly reducing damage to the tire during the demolding process. At the same time, flexible molds can adapt to more complex tire designs, meeting the production needs of tires of different specifications and tread patterns, effectively improving tire production efficiency and product quality, and becoming an indispensable key technological equipment in modern tire manufacturing.

[0003] The movable mold for automobile tires consists of an upper mold, a lower mold, several tread blocks, and transmission and heating components. The upper mold, lower mold, and tread blocks form a circular cavity for vulcanizing and shaping the tire. Guided by guide strips, the upper mold moves upward under the force of the vulcanizing machine, while the tread blocks move outward, thus opening and closing the entire mold to remove the formed tire. During this opening and closing process, the movable mold needs to limit the opening stroke to prevent it from being too long, which could prevent the mold from closing properly or even cause parts such as sliders and tread blocks to fall off. Too short a stroke would make it difficult to remove the vulcanized tire.

[0004] For example, Chinese utility model patent with publication number CN202071367U provides a limiting structure for opening a movable mold for automobile tires, including limiting components and corresponding limiting steps. It has a good limiting effect when opening the mold, which can ensure that the limiting protrusion will not deform or break. It reduces the mold damage caused by deformation or breakage of the limiting pin and poor mold opening and closing, and eliminates the risk of movable mold parts such as tread blocks falling off due to the breakage of the limiting pin during the use of the tire movable mold.

[0005] However, most existing limiting structures use rigid structures for limiting. During the movement of the top cover, the end limiting protrusion will directly collide with the groove, which cannot buffer the impact on the mold. The vibration generated by the collision is directly transmitted to the entire mold. Long-term use can easily cause various parts on the mold to loosen and shift, increasing the frequency of maintenance and adjustment. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model proposes a stroke-guided tire mold limiting structure to solve the problems mentioned in the background technology. Most existing limiting structures use rigid structures for limiting, and during the movement of the top cover, the end limiting protrusion will directly collide with the groove, which cannot buffer the collision received by the mold. The vibration generated by the collision is directly transmitted to the entire mold. After long-term use, it is easy to cause the various parts on the mold to loosen and shift, increasing the frequency of maintenance and adjustment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a stroke-guided tire mold limiting structure, including a limiting protrusion disposed on the upper cover, the limiting protrusion being slidably engaged in a groove inside the inner side of the bottom sleeve of the hot plate on the vulcanizing machine, comprising:

[0008] A mounting bracket is provided on the upper cover;

[0009] The lead screw is fixed at the bottom on the mounting bracket and extends out through a hole in the hot plate of the vulcanizing machine at the top.

[0010] A knob is provided on the lead screw; and

[0011] A retaining ring is slidably sleeved on the lead screw, and a buffer is provided between the retaining ring and the knob.

[0012] Furthermore, a fixing seat is provided on the inner side of the mounting frame, a connector is provided at the bottom of the lead screw, the connector passes through the mounting frame, a limiting bolt passes through the fixing seat, and the limiting bolt passes through the connector.

[0013] Furthermore, the knob is provided with a threaded sleeve, which is screwed onto the lead screw.

[0014] Furthermore, a limiting rod is provided on the retaining ring, the limiting rod slides along its axis through the knob, and a limiting nut is screwed to its end.

[0015] Furthermore, the knob is provided with an abutment ring at its bottom, and the retaining ring is also provided with an abutment ring.

[0016] Furthermore, buffer washers are provided on the opposite surfaces of the two sets of abutment rings.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This limiting structure adds a buffer structure to the original limiting mode of limiting protrusion and slide groove. When the mold opens, the middle sleeve is lifted upward and the slider slides outward along the inclined surface of the middle sleeve. When the limiting protrusion is about to hit the inner side of the slide groove, the hot plate on the vulcanizing machine contacts the retaining ring and compresses the buffer component with the knob. The buffer component buffers and absorbs the energy of the movement of the hot plate on the vulcanizing machine, preventing the limiting protrusion from directly hitting the inner side of the slide groove. This effectively prevents the impact force during mold opening from being completely transmitted to the entire mold and causing parts to shift or loosen. At the same time, it does not affect the operation of the mold or the function of the original limiting structure, reducing the frequency of maintenance and adjustment of various parts. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 is a cross-sectional view of a stroke-guided tire mold limiting structure provided by this utility model;

[0021] Figure 2 is an enlarged schematic diagram of region A in Figure 1;

[0022] Figure 3 is an enlarged schematic diagram of region B in Figure 1;

[0023] Figure label:

[0024] 1. Upper heating plate of vulcanizing machine; 2. Hole; 3. Top cover; 4. Quick connector of vulcanizing machine; 5. Middle sleeve; 6. Limiting protrusion; 7. Mounting bracket; 8. Fixed seat; 9. Connector; 10. Lead screw; 11. Threaded sleeve; 12. Knob; 13. Abutment ring; 14. Retaining ring; 15. Limiting rod; 16. Limiting nut; 17. Buffer washer; 18. Buffer component; 19. Slider. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0026] Example:

[0027] As shown in Figure 1, this utility model provides a stroke-guided tire mold limiting structure, including a limiting protrusion 6 set on the upper cover 3. The upper cover 3 is set on the quick connector 4 of the vulcanizing machine. The limiting protrusion 6 is slidably locked in the groove inside the middle sleeve 5 at the bottom of the upper hot plate 1 of the vulcanizing machine. When the mold is opened, the middle sleeve 5 is lifted by the upper hot plate 1 of the vulcanizing machine. The slider 19 can slide horizontally along the bottom surface of the upper cover 3 or slide along the inclined surface of the middle sleeve 5. Thus, the opening and closing of multiple sets of sliders 19 can be driven by controlling the lifting and lowering of the upper hot plate 1 of the vulcanizing machine. The movement of the upper cover 3 and the slider 19 is limited by the cooperation of the limiting protrusion 6 and the groove.

[0028] As shown in Figures 1 and 2, in this embodiment, the upper cover 3 is provided with a mounting bracket 7, the mounting bracket 7 is provided with a lead screw 10, the top of the lead screw 10 passes through the hole 2 on the hot plate 1 of the vulcanizing machine and extends outward, the lead screw 10 is provided with a knob 12, and a retaining ring 14 is also slidably sleeved on the lead screw 10, and a buffer 18 is provided between the retaining ring 14 and the knob 12.

[0029] During the lifting and lowering process of the hot plate 1 of the vulcanizing machine, relative movement occurs between it and the upper cover 3. When the hot plate 1 of the vulcanizing machine rises to abut against the retaining ring 14, it compresses the buffer 18, thereby buffering and absorbing energy from the movement of the hot plate 1 of the vulcanizing machine, and preventing the limiting protrusion 6 from directly impacting the end of the slide groove and transmitting large vibrations to the entire mold. The buffer 18 can be a spring, a damper, or other buffer structure.

[0030] As shown in Figure 3, in this embodiment, a fixing seat 8 is provided inside the mounting bracket 7, and a connector 9 is provided at the bottom of the lead screw 10. The connector 9 passes through the mounting bracket 7, and a limiting bolt passes through the fixing seat 8, with the limiting bolt passing through the connector 9. The mounting bracket 7 can be installed by bolting or by welding it directly to the upper cover 3. After the mounting bracket 7 is fixed, the connector 9 at the bottom of the lead screw 10 can be passed through the mounting bracket 7, and the position of the lead screw 10 can be fixed by the limiting bolt, which facilitates the installation and replacement of the lead screw 10.

[0031] As shown in Figure 2, in this embodiment, a threaded sleeve 11 is provided on the knob 12, and the threaded sleeve 11 is screwed onto the lead screw 10. By rotating the knob 12, the threaded sleeve 11 can slide on the lead screw 10, thereby adjusting the height of the buffer structure and resetting the buffer component 18. This prevents the knob 12 from shifting after prolonged use, which would reduce the energy absorption effect and improves the practicality of the limiting structure.

[0032] As shown in Figure 2, in this embodiment, a limiting rod 15 is provided on the retaining ring 14. The limiting rod 15 slides along its axis on the knob 12, and a limiting nut 16 is screwed to its end. The movement of the retaining ring 14 is limited by the limiting rod 15, and the limiting nut 16 prevents the limiting rod 15 from falling off, thereby improving the stability of the limiting structure.

[0033] As shown in Figure 2, in this embodiment, an abutment ring 13 is provided at the bottom of the knob 12, and an abutment ring 13 is also provided on the retaining ring 14. The abutment ring 13 protects the buffer 18, preventing damage to the buffer 18 due to the insufficient distance between the retaining ring 14 and the knob 12. Furthermore, buffer washers 17 are provided on the opposite surfaces of the two sets of abutment rings 13. The buffer washers 17 further prevent damage to the buffer structure and improve the service life of the limiting structure.

[0034] The specific usage and beneficial effects of this utility model are as follows:

[0035] This limiting structure adds a buffer structure to the original limiting mode of limiting protrusion 6 and slide groove. When the mold opens, the middle sleeve 5 is lifted upward and the slider 19 slides outward along the inclined surface of the middle sleeve 5. When the limiting protrusion 6 is about to hit the inner side of the slide groove, the hot plate 1 on the vulcanizing machine contacts the retaining ring 14 and compresses the buffer 18 with the knob 12. The buffer 18 buffers and absorbs the energy of the movement of the hot plate 1 on the vulcanizing machine, preventing the limiting protrusion 6 from directly hitting the inner side of the slide groove. This effectively prevents the impact force during mold opening from being completely transmitted to the entire mold and causing the parts to shift or loosen. At the same time, it does not affect the operation of the mold or the function of the original limiting structure, reducing the frequency of maintenance and adjustment of various parts.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A stroke-guided tire mold limiting structure, comprising a limiting protrusion (6) disposed on an upper cover (3), the limiting protrusion (6) being slidably engaged in a groove inside the bottom sleeve (5) of the hot plate (1) of the vulcanizing machine, characterized in that, It includes: a mounting bracket (7) set on the upper cover (3); a lead screw (10) fixedly set on the mounting bracket (7) at the bottom and extending out through the hole (2) on the hot plate (1) of the vulcanizing machine at the top; a knob (12) set on the lead screw (10); and a retaining ring (14) slidably sleeved on the lead screw (10), with a buffer (18) provided between the retaining ring (14) and the knob (12).

2. The stroke-guided tire mold limiting structure according to claim 1, characterized in that: The mounting bracket (7) has a fixed seat (8) on its inner side, and the bottom of the screw (10) has a connector (9). The connector (9) passes through the mounting bracket (7), and the fixed seat (8) has a limiting bolt passing through it. The limiting bolt passes through the connector (9).

3. The stroke-guided tire mold limiting structure according to claim 1, characterized in that: The knob (12) is provided with a threaded sleeve (11), which is screwed onto the lead screw (10).

4. The stroke-guided tire mold limiting structure according to claim 3, characterized in that: The retaining ring (14) is provided with a limiting rod (15), which slides along its axis through the knob (12), and its end is screwed with a limiting nut (16).

5. The stroke-guided tire mold limiting structure according to claim 3, characterized in that: The knob (12) has an abutment ring (13) at its bottom, and the retaining ring (14) also has the abutment ring (13).

6. The stroke-guided tire mold limiting structure according to claim 5, characterized in that: The opposing surfaces of the two sets of abutment rings (13) are provided with buffer washers (17).

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