Tire mold capable of efficiently preserving heat

Abstract

The utility model discloses a tire mold capable of efficiently preserving heat, which comprises a lower mold seat, a butt joint block is fixedly mounted on the lower mold seat, an arch-shaped seat is fixedly inserted on the butt joint block, a connecting piece is mounted on the arch-shaped seat, an external frame is connected and mounted on the connecting piece, an upper mold cover is arranged at the upper end of the arch-shaped seat, and a lower mold cover is arranged at the lower end of the arch-shaped seat. Meanwhile, a heat preservation structure is arranged in the arch-shaped seat; the heat preservation structure further comprises a middle sleeve inlaid ring which is in threaded connection with the upper end of the outer frame through a threaded rod. The steam inlet is formed in the upper portion of the outer frame, and a steam outlet is formed in the lower portion of the outer frame. By arranging the multiple sets of rigid connecting pieces with the good heat conduction effect, the positions of the arch-shaped base, the outer frame and the inner mold can be fixed, the heat transfer effect of the heating piece and the inner mold can be improved, the heat transfer time is shortened, heat loss is effectively prevented through the arrangement of the heat preservation piece, the cooling speed of the heating piece is slowed down, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire molds, in particular to a tire mold capable of high-efficiency heat preservation. Background Art

[0002] Tire molds are essential equipment for tire vulcanization and molding. In actual production processes, tire factories mostly use steam as the main heat energy for mold vulcanization. During the tire vulcanization process, the tire mold needs to be placed between the upper hot plate and the lower hot plate of the vulcanizer and heated to a temperature of about 180°C to maintain vulcanization. This process requires a lot of heat.

[0003] As disclosed in publication number: CN206520133U, a tire tread for producing a pre-vulcanized tread is disclosed, comprising a base, on which a plurality of inner active blocks I and inner active blocks II are arranged at intervals to form an annular structure, and the outermost ring of the annular structure forms a closed curved surface that closely matches the tire tread; a plurality of pattern blocks distributed in an annular shape are arranged on the outer ring of the annular structure, and a cavity for accommodating the vulcanized tread is formed between the pattern blocks and the inner active blocks I.

[0004] The above-mentioned device drags the inner active blocks I and II toward the center of the annular structure through a push-pull device to vulcanize the tire. However, during actual use, the device transfers heat between the hot plate and the mold, and the heat energy loss is very large. The influence of temperature can only be compensated by increasing the vulcanization time. However, a long vulcanization time will cause over-vulcanization and burning in some early vulcanized parts, which will cause energy waste and affect production efficiency. Utility Model Content

[0005] The utility model aims to provide a tire mold with efficient heat preservation, so as to solve the problem in the above-mentioned background technology that heat transfer between the hot plate and the mold causes great heat energy loss, and the influence of temperature can only be compensated by increasing the vulcanization time, but the vulcanization time is too long, which causes energy waste and affects production efficiency.

[0006] To achieve the above object, the utility model provides the following technical solutions: a tire mold capable of efficient heat preservation, comprising a lower mold base, a docking block is fixedly mounted on the lower mold base, a bow-shaped seat is fixedly plugged on the docking block, a connecting piece is mounted on the bow-shaped seat, an external frame is connected and mounted on the connecting piece, an upper mold cover is arranged at the upper end of the bow-shaped seat, and a heat preservation structure is arranged inside the bow-shaped seat;

[0007] The above-mentioned thermal insulation structure also includes:

[0008] A middle sleeve ring, which is threadedly connected to the upper end of the outer frame through a threaded rod;

[0009] A steam inlet is provided above the outer frame, and a steam outlet is provided below the outer frame;

[0010] An inner mold, which is mounted on the arched seat;

[0011] A pattern block is fixedly mounted on the inner wall of the arched seat, and a heat-insulating member is attached to the outer side of the pattern block;

[0012] An injection port is provided on the upper mold cover.

[0013] Preferably, the outer side of the inner mold is in contact with the heat-insulating component, and a connecting steel component is fixedly mounted on the inner mold, and the inner mold is connected to the lower mold base at the lower end through the connecting steel component.

[0014] Preferably, the outermost side of the thermal insulation component is set as a breathable layer, and the middle section of the thermal insulation component is set as a heat absorption layer, and the heat absorption layer is connected to the breathable layer, while the innermost side of the thermal insulation component is set as a thermal insulation layer, and the thermal insulation layer is in contact with the heat absorption layer.

[0015] Preferably, elastic airbags are fitted on the outer sides of the upper and lower ends of the bow-shaped seat, and the elastic airbag at the upper end is arranged in the gap between the middle sleeve ring and the upper mold cover and the bow-shaped seat, and the elastic airbag at the lower end is arranged in the gap between the external frame and the lower mold seat and the bow-shaped seat.

[0016] Preferably, the upper mold cover and the lower mold base are provided with a heat conduction mechanism to prevent cooling, and the interior of the mold is heated and insulated by the heat conduction mechanism.

[0017] Preferably, the heat conduction mechanism comprises:

[0018] A temperature sensor is arranged inside the upper die cover and the lower die base;

[0019] The heat preservation box is fixedly installed in the upper mold cover and the lower mold base respectively, and a heating element is fixedly installed inside the heat preservation box.

[0020] Preferably, the temperature sensor is electrically connected to the heating element inside the thermal insulation box, and the surface of the thermal insulation box is in contact with the connecting steel piece.

[0021] Compared with the prior art, the utility model has the following beneficial effects: by setting multiple sets of rigid connectors with good heat conduction effect, not only can the positions of the arch seat, the external frame and the internal mold be fixed, but also the heat transfer effect between the heating element and the internal mold can be increased, the heat transfer time can be reduced, and the setting of the heat preservation element can effectively prevent heat loss, slow down the cooling speed of the heating element, and save costs. The specific contents are as follows:

[0022] 1. The steam inlet is higher than the steam outlet, and the steam outlet is located at the bottom of the external frame to prevent condensed water from accumulating in the steam chamber and ensure that all parts of the surface of the bow seat are heated evenly. The cold air with gradually decreasing temperature moves downward with the decrease in volume and the density remains unchanged, and is discharged from the steam outlet;

[0023] Furthermore, the hot air from the steam inlet is absorbed by the heat absorbing layer through the air permeable layer of the heat insulating member on the surface of the arch seat, and the air permeable layer heats the heat insulating layer by continuously absorbing the high-temperature steam, so that the heat insulating layer can heat the pattern block;

[0024] Furthermore, as the temperature inside the mold continues to rise, the elastic airbag attached to the surface of the bow seat expands under the action of high temperature, sealing the gaps generated by the connection of various parts of the mold, thereby improving the overall thermal insulation effect of the device;

[0025] 2. When the temperature rises to the preset value, the temperature sensor inside the mold starts to provide an electrical signal to the heating element inside the insulation box, so that the heating element heats the insulation box to maintain the temperature inside the mold and prevent uneven heating during vulcanization;

[0026] Furthermore, the residual heat on the surface of the insulation box is directly transferred to the bow seat and the insulation part through the connecting steel parts, thereby improving the overall insulation effect of the mold and preventing the mold from cooling down too quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0029] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0030] Figure 4 This is a schematic diagram of the top view of the lower die base of the utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of the thermal insulation component of the utility model;

[0032] Figure 6 It is a schematic diagram of the front cross-sectional structure of the thermal insulation box of the utility model.

[0033] In the figure: 1. upper mold cover; 2. lower mold base; 3. bow-shaped base; 4. middle sleeve ring; 5. steam inlet; 6. steam outlet; 7. external frame; 8. connecting piece; 9. inner mold; 10. pattern block; 11. thermal insulation part; 1101. breathable layer; 1102. heat absorption layer; 1103. thermal insulation layer; 12. temperature sensor; 13. connecting steel parts; 14. docking block; 15. thermal insulation box; 16. elastic airbag; 17. injection port; 18. heating element. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] In this embodiment: In order to solve the problem that the heat transfer between the hot plate and the mold is proposed in the above background technology, the heat energy loss is very large and the influence of temperature can only be compensated by increasing the vulcanization time, but the vulcanization time is too long, which causes energy waste and affects the production efficiency. The following scheme is disclosed, specifically as follows: Figure 2 , Figure 4 and Figure 5 , including a lower die base 2, and a docking block 14 is fixedly installed on the lower die base 2, a bow-shaped seat 3 is fixedly plugged on the docking block 14, a connecting piece 8 is installed on the bow-shaped seat 3, and an external frame 7 is connected and installed on the connecting piece 8, and an upper die cover 1 is arranged on the upper end of the bow-shaped seat 3, and a heat preservation structure is arranged inside the bow-shaped seat 3; the above-mentioned heat preservation structure also includes: a middle sleeve ring 4, which is threadedly connected to the upper end of the external frame 7 through a threaded rod; a steam inlet 5, which is opened above the external frame 7, and a steam outlet 6 is opened below the external frame 7; an inner mold 9, which is installed on the bow-shaped seat 3; a pattern block 10, which is fixedly installed on the bow The inner wall of the tread block 3 and the outer side of the pattern block 10 are bonded with a thermal insulation member 11; the injection port 17 is opened on the upper mold cover 1, the outer side of the inner mold 9 is bonded with the thermal insulation member 11, and a connecting steel member 13 is fixedly installed on the inner mold 9, and the inner mold 9 is connected to the lower mold base 2 at the lower end through the connecting steel member 13, the outermost side of the thermal insulation member 11 is set as a breathable layer 1101, and the middle section of the thermal insulation member 11 is set as a heat absorption layer 1102, and the heat absorption layer 1102 is connected to the breathable layer 1101, and the innermost side of the thermal insulation member 11 is set as a thermal insulation layer 1103, and the thermal insulation layer 1103 is bonded with the heat absorption layer 1102.

[0037] The steam inlet 5 and the steam outlet 6 are an integrated structure welded with steel plates with the external frame 7, and all welds are fully welded without leakage. Saturated steam is filled between the bow seat 3 and the external frame 7 through the steam inlet 5 for heating and insulation. At the same time, the insulation part 11 arranged on the surface of the bow seat 3 absorbs and transfers the incoming high-temperature steam through the breathable layer 1101, and the heat-absorbing layer 1102 heats the insulation layer 1103 through the high-temperature steam, thereby heating and insulating the inner mold 9.

[0038] Embodiment 2

[0039] This embodiment further discloses, based on the first embodiment, the following solution is disclosed to solve the problem of easy loss of internal heat. The specific contents are as follows: Figure 2-Figure 3 , including elastic air bags 16 fitted on the outer sides of the upper and lower ends of the bow-shaped seat 3, and the elastic air bag 16 at the upper end is arranged at the gap between the middle sleeve ring 4 and the upper mold cover 1 and the bow-shaped seat 3, and the elastic air bag 16 at the lower end is arranged at the gap between the external frame 7 and the lower mold seat 2 and the bow-shaped seat 3.

[0040] As the temperature of the inner mold 9 continues to rise, the elastic airbag 16 mounted on the surface of the bow seat 3 expands under the action of high temperature, sealing the parts inside the mold that have gaps due to splicing, preventing high-temperature steam gas from leaking from other places, and improving the overall heating effect of the device.

[0041] Embodiment 3

[0042] This embodiment further discloses, on the basis of the first and second embodiments: a heat preservation mechanism after heating is completed, the specific contents are as follows: Figure 2 and Figure 6 , including an anti-cooling heat conduction mechanism disposed inside the upper mold cover 1 and the lower mold base 2, through which the interior of the mold is heated and insulated, the heat conduction mechanism includes: a temperature sensor 12, which is disposed inside the upper mold cover 1 and the lower mold base 2; an insulation box 15, which is fixedly installed in the upper mold cover 1 and the lower mold base 2 respectively, and a heating element 18 is fixedly installed inside the insulation box 15, the temperature sensor 12 is electrically connected to the heating element 18 inside the insulation box 15, and the surface of the insulation box 15 is in contact with the connecting steel part 13.

[0043] However, when the internal heating temperature reaches the preset value, the internal temperature sensor 12 transmits an electrical signal to the insulation box 15 connected on both sides, thereby starting the heating element 18 inside the insulation box 15 to keep the entire mold warm, preventing the mold from cooling too quickly after vulcanization and affecting the overall vulcanization effect.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tire mold capable of high efficiency heat preservation, comprising a lower mold base (2), wherein a docking block (14) is fixedly mounted on the lower mold base (2), characterized in that: The docking block (14) is fixedly plugged with a bow-shaped seat (3), a connecting piece (8) is installed on the bow-shaped seat (3), and an external frame (7) is connected and installed on the connecting piece (8), and an upper mold cover (1) is arranged at the upper end of the bow-shaped seat (3), and a heat preservation structure is arranged inside the bow-shaped seat (3); The above-mentioned thermal insulation structure also includes: A middle sleeve ring (4) which is threadedly connected to the upper end of the outer frame (7) via a threaded rod; A steam inlet (5) is provided above the outer frame (7), and a steam outlet (6) is provided below the outer frame (7); An inner mold (9) mounted on the arched seat (3); A pattern block (10) is fixedly mounted on the inner wall of the bow-shaped seat (3), and a heat-insulating member (11) is attached to the outer side of the pattern block (10); An injection port (17) is provided on the upper mold cover (1).

2. The tire mold capable of high efficiency heat preservation according to claim 1, characterized in that: The outer side of the inner mold (9) is in contact with the heat-insulating component (11), and a connecting steel component (13) is fixedly mounted on the inner mold (9), and the inner mold (9) is connected to the lower mold base (2) at the lower end via the connecting steel component (13).

3. The tire mold capable of high efficiency heat preservation according to claim 1, characterized in that: The outermost side of the thermal insulation component (11) is arranged as a breathable layer (1101), and the middle section of the thermal insulation component (11) is arranged as a heat absorption layer (1102), and the heat absorption layer (1102) is connected to the breathable layer (1101), and the innermost side of the thermal insulation component (11) is arranged as a thermal insulation layer (1103), and the thermal insulation layer (1103) is in contact with the heat absorption layer (1102).

4. The tire mold capable of high efficiency heat preservation according to claim 1, characterized in that: Elastic air bags (16) are fitted on the outer sides of the upper and lower ends of the bow-shaped seat (3), and the elastic air bag (16) at the upper end is arranged at the gap between the middle sleeve ring (4) and the upper mold cover (1) and the bow-shaped seat (3), and the elastic air bag (16) at the lower end is arranged at the gap between the external frame (7) and the lower mold seat (2) and the bow-shaped seat (3).

5. The tire mold capable of high efficiency heat preservation according to claim 1, characterized in that: The upper mold cover (1) and the lower mold base (2) are provided with anti-cooling heat conduction mechanisms inside, and the heat conduction mechanisms are used to heat the inside of the mold to provide insulation.

6. The tire mold capable of high efficiency heat preservation according to claim 5, characterized in that: The heat transfer mechanism comprises: A temperature sensor (12) is arranged inside the upper mold cover (1) and the lower mold base (2); The heat preservation box (15) is fixedly installed in the upper mold cover (1) and the lower mold base (2), and a heating element (18) is fixedly installed inside the heat preservation box (15).

7. The tire mold capable of high efficiency heat preservation according to claim 6, characterized in that: The temperature sensor (12) is electrically connected to a heating element (18) inside the heat preservation box (15), and the surface of the heat preservation box (15) is in contact with the connecting steel piece (13).

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