Demolding device for tire demolding

Abstract

The utility model discloses a demoulding device for tyre demoulding, which comprises a rack, and an upper mould, a lower mould, an ejection component and a demoulding component which are arranged on the rack, a mould plate is arranged at the bottom of the lower mould, a push plate I of the ejection component is arranged on the mould plate, the push plate I can move into an inner cavity, and the demoulding component is provided with a plurality of push plates II. The first push plates and the second push plates are arranged on the mold plate of the lower mold, when a tire needs to be demolded, multiple point positions of the tire are firstly ejected out through the multiple second push plates, the position nearby the ejected tire is separated from the lower mold, and then the whole tire is ejected out of the lower mold through the first push plates, so that demolding operation of the tire is achieved; compared with traditional direct ejection demolding, multi-point ejection separation operation is firstly carried out through the second push plate, so that the attaching adhesion area between the tire and the lower mold is reduced, subsequent tire demolding operation is better facilitated, and the tire is not prone to being damaged during ejection demolding.

Description

Technical Field

[0001] The utility model relates to the field of tire molds, in particular to a demoulding device for demoulding a tire. Background Art

[0002] At present, the production of tires generally involves injecting rubber raw materials into tire molds, and then vulcanizing the rubber raw materials at high temperature to make rubber tires. However, when the rubber raw materials are just formed into tires, the high temperature and high pressure vulcanization process will make the contact surface between the tire and the mold completely fit, and due to the stickiness of the rubber, it is easy to make it difficult for the tire to be directly removed from the mold; and the internal temperature of the newly formed tire is still relatively high, and the structure is still relatively unstable. At this time, if the tire is forcibly ejected directly from the tire mold through ejection components such as ejector rods, it is easy to damage the tire and affect the quality of the tire. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned shortcomings of the prior art and provide a demoulding device for tire demoulding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A demoulding device for demoulding a tire comprises a frame and an upper mold, a lower mold, an ejector assembly and a demoulding assembly installed on the frame, wherein the upper mold and the lower mold cooperate with each other to form an inner cavity for processing the tire, the ejector assembly and the demoulding assembly are arranged below the lower mold, a template is arranged at the bottom of the lower mold, a push plate 1 of the ejector assembly is arranged on the template, and the push plate 1 can move into the inner cavity, and the demoulding assembly is provided with a plurality of push plates 2, which are circumferentially distributed on the lower mold and can move into the inner cavity.

[0006] Preferably, the push plate 2 is circumferentially distributed on the template, the demoulding assembly is provided with a push rod 2 that passes through the template and is connected to the push plate 2, the push rod 2 is provided with a liquid guide hole that can be connected to the inner cavity, and the template is provided with a liquid outlet hole corresponding to the liquid guide hole.

[0007] Preferably, the template is provided with a first card slot matched with the first push plate and a second card slot matched with the second push plate, and the liquid outlet hole penetrates inwardly to the second card slot.

[0008] Preferably, the liquid guide hole is provided at the upper portion of the push rod 2, and when the push plate 2 moves into the inner cavity, the liquid guide hole is communicated with the inner cavity.

[0009] Preferably, the push plate 1 is in an annular shape as a whole, and is provided with notches corresponding to the positions of the push plate 2 at intervals, and the push plate 2 can move into the inner cavity through the notches.

[0010] Preferably, a driving member 2 is arranged on the bottom plate of the frame, a slide plate 1 is arranged on the output end of the driving member 2, and a push rod 1 connected to a push plate 1 is arranged on the slide plate 1.

[0011] Preferably, two circumferentially distributed vertical guide rods are provided between the lower mold and the bottom plate, and the slide plate one is slidably provided on the guide rods two.

[0012] Preferably, a driving member three is provided on the lower mold, and a slide plate two connected to a push rod two is provided on the output end of the driving member three.

[0013] Preferably, a driving member 1 is arranged on the top plate of the frame, an output end of the driving member 1 is connected to the upper mold, and a plurality of guide rods 1 vertically penetrating the top plate are arranged on the cover of the upper mold.

[0014] The beneficial effects of the utility model are:

[0015] 1. By arranging a push plate 1 and a push plate 2 on the template of the lower mold, the push plate 2 has a smaller contact area when ejecting the tire than the push plate 1, and the number of push plates is larger. When the tire needs to be demolded, multiple push plates 2 are used to first eject multiple points of the tire, so that the nearby position of the tire to be ejected is separated from the lower mold, and then the tire is ejected from the lower mold by the push plate 1 to realize the demolding operation of the tire. Compared with the traditional direct ejection demolding, the push plate 2 is used to first perform the ejection separation operation at multiple points to reduce the bonding area between the tire and the lower mold, that is, to reduce the adhesion between the tire and the lower mold, which is more conducive to the subsequent demolding operation of the tire, and the tire is not easily damaged during ejection demolding;

[0016] 2. By setting a liquid guide hole on the push rod 2, the liquid guide hole can inject external demoulding oil into the inner cavity, and then the external demoulding oil penetrates into the space between the tire and the lower mold, making the tire easier to demould. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the cooperation between the lower mold and the demoulding component of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lower mold of the utility model;

[0021] Figure 5 The cross-sectional view of the upper mold and the lower mold of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 6 The cross-sectional view of the upper mold and the lower mold of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 7 for Figure 6 A magnified schematic diagram of center A.

[0024] In the figure: frame 1, top plate 11, bottom plate 12, driving member 13, guide rod 14, upper mold 2, cover 21, lower mold 3, inner cavity 31, template 32, slot 1 33, slot 2 34, liquid outlet 35, ejection assembly 4, driving member 2 41, guide rod 2 42, slide plate 1 43, push rod 1 44, push plate 1 45, notch 451, demoulding assembly 5, driving member 3 51, slide plate 2 52, push rod 2 53, liquid guide hole 54, push plate 2 55. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0027] like Figure 1 to Figure 7 As shown, a demoulding device for demoulding a tire comprises a frame 1 and an upper mold 2, a lower mold 3, an ejection assembly 4, and a demoulding assembly 5 installed on the frame 1, wherein the upper mold 2 and the lower mold 3 cooperate with each other to form an inner cavity 31 for processing a tire, specifically, the lower mold 3 is fixedly mounted on a bottom plate 12 of the frame 1, the upper mold 2 and the lower mold 3 are vertically arranged opposite to each other, a driving member 13 is arranged on the top plate 11 of the frame 1, the driving member 13 can be a hydraulic cylinder, the output end of the driving member 13 is connected to the upper mold 2, and the upper mold 2 is driven to move vertically up and down by the driving member 13, and a plurality of guide rods 14 vertically penetrating the top plate 11 are arranged on the cover 21 of the upper mold 2, and the guide rods 14 are arranged to provide guidance for the movement of the upper mold 2.

[0028] When the upper mold 2 moves downward until it is pressed against the lower mold 3, the cover 21 closes the lower mold 3, thereby forming an inner cavity 31 between the upper mold 2 and the lower mold 3. By injecting rubber raw materials into the inner cavity 31, the inner cavity 31 can be used as a mold to produce a rubber tire; when the rubber tire is processed, the lower mold 3 is opened by moving the upper mold 2 upward to facilitate the subsequent tire demolding operation.

[0029] refer to Figure 1 , Figure 2 As shown, the ejection assembly 4 and the demolding assembly 5 are arranged below the lower mold 3. Specifically, circumferentially distributed vertical guide rods 42 are arranged between the lower mold 3 and the bottom plate 12. The lower mold 3 is fixed on the guide rods 42. A driving member 41 is arranged on the bottom plate 12. The driving member 41 can be a hydraulic cylinder. The driving member 41 is located between a plurality of guide rods 42. A slide plate 43 is arranged on the output end of the driving member 41. The slide plate 43 is slidably arranged on the guide rods 42, and the slide plate 43 is driven to reciprocate up and down by the driving member 41.

[0030] Further, refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, a template 32 is provided at the bottom of the lower mold 3, and the template 32 is annular as a whole. The push plate 45 of the ejection assembly 4 is arranged on the template 32. Specifically, a slot 33 adapted to the push plate 45 is opened on the template 32. When the push plate 45 is set in the slot 33, the push plate 45 is basically flush with the upper end surface of the template 32.

[0031] refer to Figure 5 , Figure 6 As shown, the push plate 45 can move into the inner cavity 31, and the slide plate 43 is provided with a push rod 44 connected to the push plate 45, that is, one end of the push rod 44 is fixed to the slide plate 43, and the other end of the push rod 44 is fixed to the push plate 45, and then the slide plate 43 moves upward, so as to drive the push plate 45 to move upward through the push rod 44, that is, the ejection and demoulding operation of the rubber tire in the inner cavity 31 is realized.

[0032] refer to Figure 3 , Figure 5 to Figure 7 As shown, the lower mold 3 is provided with a driving member 3 51, and the driving member 3 51 is fixedly installed on the lower end surface of the lower mold 3. The driving member 3 51 can be a hydraulic cylinder, and a slide plate 2 52 connected to a push rod 2 53 is provided on the output end of the driving member 3 51. The demoulding assembly 5 is provided with a plurality of push plates 2 55, and the other end of the push rod 2 53 is connected to the push plate 2 55, and then the slide plate 2 52 drives the push plate 2 55 to move up and down through the push rod 2 53, that is, when the slide plate 2 52 moves upward, the push plate 2 55 can move into the inner cavity 31.

[0033] The second slide plate 52 is slidably disposed on the first push rod 44 , and the first push rod 44 provides guidance for the vertical up and down movement of the second slide plate 52 .

[0034] The push plate 55 is circumferentially distributed on the lower mold 3. Specifically, the push plate 55 is circumferentially distributed on the template 32. The template 32 is provided with a slot 34 that matches the push plate 55. When the push plate 55 is located in the slot 34, the push plate 55 is basically flush with the upper end surface of the template 32.

[0035] refer to Figure 4 , Figure 6 , Figure 7 As shown, the push plate 1 45 is in an overall ring shape, and the push plate 2 55 is in multiple numbers. The push plate 1 45 is provided with notches 451 corresponding to the positions of the push plate 2 55 at intervals. The push plate 2 55 can move into the inner cavity 31 through the notches 451, that is, the push plate 2 55 can eject the tire inwardly. Compared with the push plate 1 45, the push plate 2 55 has a smaller contact area with the tire when ejecting the tire, and is easier to eject the tire.

[0036] When the tire needs to be demolded, multiple points of the tire are first ejected through multiple push plates 55, so that the position near the ejected tire is separated from the lower mold 3, and then the tire is completely ejected from the lower mold through push plate 1 45 to achieve the demolding operation of the tire.

[0037] Compared with the traditional direct ejection demolding, the ejection and separation operation at multiple points is first performed through the push plate 2 55 to reduce the bonding area between the tire and the lower mold 3, that is, to reduce the adhesion between the tire and the lower mold 3, which is more conducive to the subsequent tire demolding operation and is not easy to damage the tire during ejection demolding.

[0038] According to actual conditions, the push plate 2 55 can also be distributed on the outer wall of the lower mold 3 and push the rubber tire located in the inner cavity 31 inward to further reduce the adhesion area between the tire and the lower mold 3.

[0039] Furthermore, the push rod 53 passes through the template 32 and is connected to the push plate 55. The push rod 53 is provided with a liquid guide hole 54 that can be connected to the inner cavity 31. The liquid guide hole 54 can inject external demoulding oil into the inner cavity 31, and then the external demoulding oil penetrates into the space between the tire and the lower mold 3, making the tire easier to demould.

[0040] Specifically, refer to Figure 6 , Figure 7 As shown, the liquid guide hole 54 is opened at the upper part of the push rod 53. When the push plate 55 moves into the inner cavity 31, the liquid guide hole 54 is connected with the inner cavity 31, that is, when the push plate 55 ejects the tire at multiple points, the external demoulding oil can be injected into the inner cavity 31 through the liquid guide hole 54, and then penetrate into the space between the tire and the lower mold 3 through the external demoulding oil to accelerate the separation of the tire and the lower mold 3, so as to facilitate the push plate 45 to eject the tire for demoulding later.

[0041] At the same time, by infiltrating the external demoulding oil between the tire and the lower mold 3, the demoulding oil can also absorb the heat of the newly molded tire to accelerate the cooling and molding of the tire and improve the molding efficiency of the tire.

[0042] The template 32 is provided with a liquid outlet hole 35 corresponding to the liquid guide hole 54, and the liquid outlet hole 35 penetrates inwardly to the second card slot 34. When the tire is demoulded, the demoulding oil in the inner cavity 31 can be extracted through the liquid outlet hole 35, and when the second push plate 55 is downwardly fitted into the second card slot 34, the second push plate 55 can close the liquid guide hole 54 and the liquid outlet hole 35 to avoid interference with the manufacturing of the tire.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A demoulding device for demoulding a tire, comprising a frame (1) and an upper mold (2), a lower mold (3), an ejector assembly (4), and a demoulding assembly (5) mounted on the frame (1), wherein the upper mold (2) and the lower mold (3) cooperate with each other to form an inner cavity (31) for processing a tire, and the ejector assembly (4) and the demoulding assembly (5) are arranged below the lower mold (3), characterized in that: The bottom of the lower mold (3) is provided with a template (32), and the push plate 1 (45) of the ejection assembly (4) is arranged on the template (32), and the push plate 1 (45) can move into the inner cavity (31). The demoulding assembly (5) is provided with a plurality of push plates 2 (55), and the push plates 2 (55) are circumferentially distributed on the lower mold (3), and the push plates 2 (55) can move into the inner cavity (31).

2. A demoulding device for demoulding a tire as claimed in claim 1, characterized in that: The push plate 2 (55) is circumferentially distributed on the template (32), the demoulding assembly (5) is provided with a push rod 2 (53) penetrating the template (32) and connected to the push plate 2 (55), the push rod 2 (53) is provided with a liquid guide hole (54) that can be connected to the inner cavity (31), and the template (32) is provided with a liquid outlet hole (35) corresponding to the liquid guide hole (54).

3. A demoulding device for demoulding a tire as claimed in claim 2, characterized in that: The template (32) is provided with a first card slot (33) matched with the first push plate (45) and a second card slot (34) matched with the second push plate (55), and the liquid outlet hole (35) penetrates inwardly to the second card slot (34).

4. A demoulding device for demoulding a tire as claimed in claim 2, characterized in that: The liquid guide hole (54) is provided at the upper part of the second push rod (53), and when the second push plate (55) moves into the inner cavity (31), the liquid guide hole (54) is communicated with the inner cavity (31).

5. A demoulding device for demoulding a tire as claimed in claim 1, characterized in that: The push plate 1 (45) is in an annular shape as a whole, and is provided with notches (451) corresponding to the position of the push plate 2 (55) at intervals, and the push plate 2 (55) can move into the inner cavity (31) through the notches (451).

6. A demoulding device for demoulding a tire as claimed in claim 1, characterized in that: A second driving member (41) is arranged on the bottom plate (12) of the frame (1), a slide plate (43) is arranged on the output end of the second driving member (41), and a push rod (44) connected to a push plate (45) is arranged on the slide plate (43).

7. A demoulding device for demoulding a tire as claimed in claim 6, characterized in that: A circumferentially distributed vertical guide rod 2 (42) is arranged between the lower mold (3) and the bottom plate (12), and the slide plate 1 (43) is slidably arranged on the guide rod 2 (42).

8. A demoulding device for demoulding a tire as claimed in claim 2, characterized in that: The lower mold (3) is provided with a driving member 3 (51), and the output end of the driving member 3 (51) is provided with a slide plate 2 (52) connected to a push rod 2 (53).

9. A demoulding device for demoulding a tire as claimed in claim 1, characterized in that: A driving member (13) is arranged on the top plate (11) of the frame (1), the output end of the driving member (13) is connected to the upper mold (2), and a plurality of guide rods (14) vertically penetrating the top plate (11) are arranged on the cover (21) of the upper mold (2).

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