Patterned steel sheet fixing structure and tire mold

Abstract

The utility model discloses a pattern steel sheet fixing structure and a tire mold, and belongs to the technical field of tire vulcanization equipment, and the pattern steel sheet fixing structure comprises a pattern block and a steel sheet groove arranged on the cavity surface of the pattern block; the steel sheet body comprises a base part and a modeling part, the thickness of the base part is consistent with that of the modeling part, the base part is embedded into the steel sheet groove, and the modeling part protrudes out of the cavity surface; a fixing hole penetrating through the base part is formed in the side wall of the base part; the fixing piece comprises a first fixing part and a second fixing part; the first fixing part extends into the fixing hole; the fixing piece is fixedly connected with the pattern block through the second fixing part; according to the utility model, the steel sheet body can be positioned on the fixing piece by utilizing the first fixing part on the fixing piece and the fixing hole in the base part; the steel sheet body can be fixedly connected with a pattern block by utilizing the second fixing part on the fixing piece, so that the steel sheet body is fixed on the pattern block; and the fixing pieces and the steel sheet body as well as the fixing pieces and the pattern blocks can be conveniently assembled and disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of tire vulcanization equipment, and particularly relates to a fixing structure for pattern steel sheets and a tire mold. Background Art

[0002] There are mainly two ways to connect the pattern blocks and the steel sheets of the existing tire molds: First, the steel sheets and the pattern blocks are integrally cast; Second, after the pattern blocks are grooved by processes such as electric discharge machining and straight carving, the steel sheets are inserted into the grooves and fixed by means of extrusion, gluing or doweling; After the steel sheets and the pattern blocks are fixedly connected in the above two ways, they cannot be easily disassembled and replaced.

[0003] With the accelerating speed of the update and iteration of tire pattern styles, when tire manufacturers need to produce tires with the same specifications but different pattern styles, since the steel sheets on the tire molds are difficult to disassemble and replace, they can only reprocess a new set of tire molds, resulting in too high production costs. At the same time, it will also bring a great deal of pressure to the development cycle of tire products.

[0004] Therefore, designing and developing a fixing structure for pattern steel sheets and a tire mold that can facilitate the disassembly and replacement of steel sheets is an urgent problem to be solved at present. Summary of the Utility Model

[0005] For the problems existing in the prior art, the utility model provides a fixing structure for pattern steel sheets and a tire mold. The steel sheet body can be positioned on the fixing part by using the first fixing part on the fixing part and the fixing hole on the base; the second fixing part on the fixing part can be fixedly connected with the pattern block, and then the steel sheet body is fixed on the pattern block; the fixing part and the steel sheet body, as well as the fixing part and the pattern block, can be conveniently assembled and disassembled, realizing the disassembly and replacement of the steel sheet and the rapid switching of tire patterns, greatly reducing the production cost, and being more environmentally friendly.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] On the one hand, the utility model provides a fixing structure for pattern steel sheets, including:

[0008] A pattern block, on the cavity surface of which there is a steel sheet groove;

[0009] A steel sheet body, which includes a base and a shaping part. The base and the shaping part have the same thickness. The base is embedded in the steel sheet groove, and the shaping part protrudes from the cavity surface; there is a fixing hole penetrating through the side wall of the base.

[0010] A fixing member, which includes a first fixing portion and a second fixing portion; the first fixing portion extends into the fixing hole; the fixing member is fixedly connected to the tread block through the second fixing portion.

[0011] As a preferred technical solution, a placement hole communicating with the steel sheet groove is provided on the tread block.

[0012] As a preferred technical solution, the second fixing portion is located in the placement hole;

[0013] And / or, the center of the fixing hole is located on the axis of the steel sheet body.

[0014] As a preferred technical solution, the fixing member further includes a connecting portion connecting the first fixing portion and the second fixing portion.

[0015] As a preferred technical solution, the first fixing portion is set as a fixing pin, the connecting portion is set as a screw rod, and the fixing pin sequentially passes through the screw rod and the fixing hole; the second fixing portion is set as a nut threadedly connected to the screw rod, and a limiting surface matching the nut is provided on the inner wall surface of the placement hole.

[0016] As a preferred technical solution, the screw rod has a first end surface, and the first end surface is flush with the cavity surface; a positioning groove is provided at the first end surface, and the base is embedded in the positioning groove; a through hole passing through the positioning groove is provided on the screw rod, the fixing pin passes through the through hole and the fixing hole, and both ends of the fixing pin are located in the through hole;

[0017] And / or, the fixing hole is set as a circular hole.

[0018] As a preferred technical solution, the connecting portion is set as a rotating shaft capable of rotating in the placement hole. A first protrusion is provided on the circumferential surface of one end of the rotating shaft, and the first protrusion forms the first fixing portion; the second fixing portion includes a first groove provided on the circumferential surface of the other end of the rotating shaft, a second groove provided on the inner wall surface of the placement hole, and a positioning pin. The first groove and the second groove can form a pin hole matching the positioning pin.

[0019] As a preferred technical solution, the connecting portion is set as a connecting block. A second protrusion is provided on the side surface of one end of the connecting block, and the second protrusion forms the first fixing portion; a third protrusion is provided on the side surface of the other end of the connecting block, and the third protrusion forms the second fixing portion. A fixing surface matching the third protrusion is provided on the inner wall surface of the placement hole, and the third protrusion is fixedly connected to the fixing surface by a screw.

[0020] As a preferred technical solution, the fixing holes are square holes or oval holes.

[0021] In a second aspect, the present utility model provides a tire mold, including a slider, and the slider is provided with a pattern steel sheet fixing structure as described in any one of the above.

[0022] The beneficial effects of the present utility model are manifested in:

[0023] The present utility model can stably position the steel sheet body on the fixing member by using the first fixing portion on the fixing member and the fixing holes on the base; the second fixing portion on the fixing member can be fixedly connected to the pattern block, and then the steel sheet body is fixed on the pattern block; the assembly and disassembly between the fixing member and the steel sheet body and between the fixing member and the pattern block are convenient, realizing the disassembly and replacement of the steel sheet and the rapid switching of the tire pattern, greatly reducing the production cost, and being more environmentally friendly.

[0024] For the steel sheet body of the present utility model, only fixing holes need to be processed on the basis of the existing steel sheet. The steel sheet is generally formed by stamping. In this solution, the fixing holes can be directly formed during stamping without excessive additional processing, and the processing is simple; moreover, the opening of the steel sheet groove at the cavity surface of the pattern block is small, which is particularly applicable in the case of limited space such as when the distance between the steel sheet body and the pattern rib is close. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the first embodiment of a pattern steel sheet fixing structure of the present utility model;

[0026] Figure 2 is Figure 1 a schematic diagram of the structure of the screw rod in

[0027] Figure 3 is a schematic diagram of the overall structure of the second embodiment of a pattern steel sheet fixing structure of the present utility model;

[0028] Figure 4 is Figure 3 a schematic diagram of the structure of the fixing member after screwing together in

[0029] Figure 5 is a schematic diagram of the overall structure of the third embodiment of a pattern steel sheet fixing structure of the present utility model;

[0030] Figure 6 is Figure 5 a schematic diagram of the structure of the fixing member after installation in

[0031] Figure 7 is a schematic diagram of the structure of an embodiment of a tire mold of the present utility model;

[0032] Figure 8For Figure 7 the schematic diagram of the arrangement of the tread pattern and steel sheets in

[0033] In the figure: 1 - tread block, 11 - cavity surface, 12 - steel sheet groove, 13 - placement hole, 131 - limiting surface, 132 - second groove, 133 - fixing surface, 2 - steel sheet body, 21 - base, 22 - profiling part, 23 - fixing hole, 31 - fixing pin, 32 - screw, 321 - first end face, 322 - positioning groove, 323 - through hole, 33 - nut, 4 - rotating shaft, 41 - first protrusion, 42 - first groove, 5 - positioning pin, 6 - connecting block, 61 - second protrusion, 62 - third protrusion, 7 - slider. Detailed implementation mode

[0034] For the convenience of those skilled in the art to understand, the following further describes the present utility model with reference to the accompanying drawings.

[0035] In a first aspect, the present utility model provides a fixing structure for a patterned steel sheet. Embodiment

[0036] Please refer to Figure 1 and Figure 2 , which is an embodiment of a fixing structure for a patterned steel sheet provided by the present utility model. It includes a tread block 1, and a steel sheet groove 12 is provided on the cavity surface 11 of the tread block 1; the base 21 of the steel sheet body 2 is embedded in the steel sheet groove 12, and the steel sheet body 2 and the steel sheet groove 12 are in clearance fit, and the steel sheet groove 12 can position the steel sheet body 2 in the extending direction along the cavity surface 11; the profiling part 22 of the steel sheet body 2 protrudes from the cavity surface 11 for forming the tread pattern of the tire; a placement hole 13 communicating with the steel sheet groove 12 is further provided on the tread block 1, and a fixing member is arranged in the placement hole 13; a fixing hole 23 is provided on the base 21 of the steel sheet body 2, the first fixing part of the fixing member is set as a fixing pin 31, the first fixing part and the second fixing part of the fixing member are connected through a connecting part, the connecting part is set as a screw 32, and the fixing pin 31 sequentially passes through the screw 32 and the fixing hole 23 to realize the fixed connection between the steel sheet body 2 and the fixing member; the second fixing part of the fixing member is set as a nut 33 threadedly connected with the screw 32, and a limiting surface 131 matching the nut 33 is provided on the inner wall surface of the placement hole 13. Rotating the nut 33 to make the nut 33 abut against the limiting surface 131 can fix the fixing member and the steel sheet body 2 on the tread block 1; the fixing member and the steel sheet body 2 and between the fixing member and the tread block 1 can be conveniently assembled and disassembled, realizing the disassembly and replacement of the steel sheet and the rapid switching of the tire tread.

[0037] It should be noted that, please refer to Figure 8, the steel sheet body 2 and the steel sheet groove 12 are usually strip-shaped; in other embodiments, the shaping part 22 of the steel sheet body 2 can also be S-shaped or W-shaped. At this time, the base part 21 of the steel sheet body 2 can have the same shape as the shaping part 22. At the same time, the shape of the steel sheet groove 12 also matches the shape of the shaping part 22; alternatively, the base part 21 of the steel sheet body 2 is still strip-shaped, and the base part 21 is fixedly connected to the shaping part 22, and the shaping part 22 can still be effectively fixed on the cavity surface 11.

[0038] It should be noted that the steel sheet body 2 includes a base part 21 and a shaping part 22. The base part 21 and the shaping part 22 have the same thickness. Therefore, it is allowed to be formed by stamping during the steel sheet processing, and no additional processing is required for the steel sheet. At the same time, the thickness of the steel sheet groove 12 cooperating with it is small, which will not have too much impact on the strength of the tread block 1, and also avoids occupying too much space and causing possible interference problems;

[0039] It should be noted that, please refer to Figure 1 , a fixing hole penetrating through the base part is provided on the side wall of the base part. The center of the fixing hole 23 should be located on the axis of the steel sheet body 2 to ensure that the first fixing part applies a stable force to the steel sheet body 2 and avoid the steel sheet from shifting; in this embodiment, the steel sheet body 2 with the same shape of the base part 21 but different shapes of the shaping part 22 can be conveniently replaced; further, in this embodiment, by changing the width of the steel sheet groove 12, the base parts 21 with various different thicknesses can be matched, and the replaceable range of the steel sheet body 2 can be further improved.

[0040] In this embodiment, please refer to Figure 1 , the second fixing part is located in the placing hole 13 and does not interfere with the installation and movement of the tread block 1.

[0041] In this embodiment, please refer to Figure 1 and Figure 2 , the screw 32 has a first end face 321, and the first end face 321 is flush with the cavity surface 11; correspondingly, a groove matching the shape of the screw 32 should be machined at the position corresponding to the screw 32 on the inner wall of the steel sheet groove 12 to ensure that the screw 32 can smoothly move along the steel sheet groove 12; a positioning groove 322 is provided at the first end face 321, and the depth direction of the positioning groove 322 is the axial direction of the screw 32, and the base part 21 can be embedded into the positioning groove 322; a through hole 323 passing through the positioning groove 322 is provided on the screw 32, and the fixing pin 31 passes through the through hole 323 and the fixing hole 23 at the same time to stably connect the base part 21 and the screw 32; both ends of the fixing pin 31 are located in the through hole 323, and the fixing pin 31 does not prevent the installation and disassembly of the steel sheet body 2.

[0042] In this embodiment, please refer to Figure 1, the fixing hole 23 is set as a round hole. Correspondingly, the fixing pin 31 is set as a cylindrical pin. The diameter of the round hole is the same as that of the cylindrical pin to ensure that the cylindrical pin can stably connect the steel sheet body 2 and the screw 32. In other embodiments, the fixing hole 23 can also be set in other shapes, and the cross-section of the fixing pin 31 matches the shape of the fixing hole 23 to stably connect the steel sheet body 2 and the screw 32.

[0043] The specific assembly process of this embodiment is as follows:

[0044] Embed the base 21 of the steel sheet body 2 into the positioning groove 322, and coaxialize the through hole 323 on the screw 32 and the fixing hole 23 on the base 21; pass the fixing pin 31 through the through hole 323 and the positioning groove 322 at the same time, and make both ends of the fixing pin 31 located inside the through hole 323 to connect the screw 32 and the steel sheet body 2; insert the connection body formed by the screw 32 and the steel sheet body 2 into the steel sheet groove 12, make one end of the screw 32 flush with the cavity surface 11 of the pattern block 1, and make the other end of the screw 32 extend into the placement hole 13; thread the nut 33 onto the end of the screw 32 located in the placement hole 13 and make the nut 33 abut against the limiting surface 131, then the steel sheet body 2 can be fixed on the pattern block 1. Embodiment

[0045] Please refer to Figure 3 and Figure 4 , the main difference between this embodiment and the first embodiment is that the connecting part is set as a rotating shaft 4 that can rotate in the placement hole 13. A first protrusion 41 is provided on the circumferential surface of one end of the rotating shaft 4, and the first protrusion 41 forms a first fixing part. Rotating the rotating shaft 4 can make the first protrusion 41 embed into the fixing hole 23, and the rotating shaft 4 can be stably connected to the steel sheet body 2; the second fixing part includes a first groove 42 provided on the circumferential surface of the other end of the rotating shaft 4, a second groove 132 provided on the inner wall surface of the placement hole 13, and a positioning pin 5. When the first groove 42 and the second groove 132 are oppositely arranged, a pin hole matching the positioning pin 5 can be formed. After inserting the positioning pin 5 into the pin hole, the rotating shaft 4 can be positioned, and thus the steel sheet body 2 can be fixed on the pattern block 1.

[0046] In this embodiment, please refer to Figure 3 and Figure 4 , at least part of the circumferential surface of the rotating shaft 4 is in clearance fit with the placement hole 13 to ensure that the rotating shaft 4 can only rotate around its axis in the placement hole 13.

[0047] It should be noted that the fixing hole 23 in this embodiment is preferably set as a square hole or an oval hole. Correspondingly, the shape of the first protrusion 41 matches the shape of the fixing hole 23, enabling a fixed connection between the rotating shaft 4 and the steel sheet body 2. Further, a guiding groove for facilitating the rotational embedding of the first protrusion 41 should be provided on one side of the fixing hole 23, and the depth of the guiding groove should gradually deepen along the direction close to the fixing hole 23 to ensure that when the rotating shaft 4 rotates, the first protrusion 41 can smoothly embed into the fixing hole 23. In this embodiment, only the steel sheet body 2 leaks out from the cavity surface 11, which can effectively reduce the processing difficulty and does not affect the surface quality of the vulcanized tire.

[0048] The specific assembly process of this embodiment is as follows:

[0049] Embed the base 21 of the steel sheet body 2 into the positioning groove 322; rotate the rotating shaft 4 so that the first protrusion 41 embeds into the fixing hole 23. At the same time, the first groove 42 and the second groove 132 cooperate to form a pin hole; insert the positioning pin 5 into the pin hole, and the steel sheet body 2 can be fixed to the tread block 1. Embodiment

[0050] Please refer to Figure 5 and Figure 6 This embodiment and the first embodiment are mainly different in that the connecting portion is set as a connecting block 6. There is a gap between the connecting block 6 and the inner wall of the placing hole 13, and the connecting block 6 can swing slightly within the placing hole 13. A second protrusion 61 is provided on the side of one end of the connecting block 6, and the second protrusion 61 forms a first fixing portion. Swinging the connecting block 6 can make the second protrusion 61 embed into the fixing hole 23, enabling a stable connection between the connecting block 6 and the steel sheet body 2. A third protrusion 62 is provided on the side of the other end of the connecting block 6, and the third protrusion 62 forms a second fixing portion. There is a fixing surface 133 matching the third protrusion 62 on the inner wall surface of the placing hole 13. The screw passes through the third protrusion 62 and is threadedly connected to the fixing surface 133, and the steel sheet body 2 can be fixed to the tread block 1.

[0051] It should be noted that the fixing hole 23 in this embodiment is also preferably set as a square hole or an oval hole. Correspondingly, the shape of the first protrusion 41 matches the shape of the fixing hole 23, enabling a fixed connection between the connecting block 6 and the steel sheet body 2. In this embodiment, only the steel sheet body 2 leaks out from the cavity surface 11, which can effectively reduce the processing difficulty and does not affect the surface quality of the vulcanized tire.

[0052] In the second aspect, please refer to Figure 7 and Figure 8 The present invention provides a tire mold, including a slider 7. The aforementioned tread steel sheet fixing structure is provided on the slider 7. Specifically, a steel sheet body 2 and a tread rib are inlaid on the cavity surface 11 of the tread block 1, and the tread block 1 is fixed on the slider 7 and can move along with the slider 7.

[0053] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixed structure for pattern steel sheets, characterized in that, Comprising: A tread block (1), on the cavity surface (11) of the tread block (1) there is provided a steel sheet groove (12); A steel sheet body (2), the steel sheet body (2) includes a base portion (21) and a shaping portion (22), the base portion (21) and the shaping portion (22) have the same thickness, the base portion (21) is embedded in the steel sheet groove (12), and the shaping portion (22) protrudes from the cavity surface (11); on the side wall of the base portion (21) there is provided a fixing hole (23) penetrating through the base; A fixing member, the fixing member includes a first fixing portion and a second fixing portion; the first fixing portion extends into the fixing hole (23); the fixing member is fixedly connected to the tread block (1) through the second fixing portion.

2. The fixed structure of a pattern steel sheet according to claim 1, characterized in that, On the tread block (1) there is a placement hole (13) communicating with the steel sheet groove (12).

3. The fixed structure of a pattern steel sheet according to claim 2, characterized in that The second fixing portion is located in the placement hole (13); And / or, the center of the fixing hole (23) is located on the axis of the steel sheet body (2).

4. A fixed structure for pattern steel sheets according to claim 2, characterized in that, The fixing member further includes a connecting portion connecting the first fixing portion and the second fixing portion.

5. A fixed structure for pattern steel sheets according to claim 4, characterized in that, The first fixing portion is set as a fixing pin (31), the connecting portion is set as a screw rod (32), the fixing pin (31) sequentially passes through the screw rod (32) and the fixing hole (23); the second fixing portion is set as a nut (33) threadedly connected to the screw rod (32), and on the inner wall surface of the placement hole (13) there is a limiting surface (131) matching the nut (33).

6. The fixed structure of the pattern steel sheet according to claim 5, wherein The screw rod (32) has a first end face (321), the first end face (321) is flush with the cavity surface (11); at the first end face (321) there is provided a positioning groove (322), the base portion (21) is embedded in the positioning groove (322); on the screw rod (32) there is a through hole (323) passing through the positioning groove (322), the fixing pin (31) passes through the through hole (323) and the fixing hole (23), and both ends of the fixing pin (31) are located in the through hole (323); And / or, the fixing hole (23) is set as a round hole.

7. The fixed structure of a pattern steel sheet according to claim 4, characterized in that, The connecting portion is set as a rotating shaft (4) capable of rotating in the placement hole (13), on the circumferential surface of one end of the rotating shaft (4) there is provided a first protrusion (41), the first protrusion (41) forms the first fixing portion; the second fixing portion includes a first groove (42) provided on the circumferential surface of the other end of the rotating shaft (4), a second groove (132) provided on the inner wall surface of the placement hole (13), and a positioning pin (5), and the first groove (42) and the second groove (132) can form a pin hole matching the positioning pin (5).

8. A fixed structure for pattern steel sheets according to claim 4, characterized in that, The connecting portion is provided as a connecting block (6). A second protrusion (61) is provided on the side surface of one end of the connecting block (6), and the second protrusion (61) forms the first fixing portion; a third protrusion (62) is provided on the side surface of the other end of the connecting block (6), and the third protrusion (62) forms the second fixing portion. A fixing surface (133) matching the third protrusion (62) is provided on the inner wall surface of the placement hole (13), and the third protrusion (62) is fixedly connected to the fixing surface (133) by screws.

9. A fixed structure for pattern steel sheets according to claim 7 or 8, characterized in that, The fixing hole (23) is provided as a square hole or an oval hole.

10. A tire mold, characterized in that, It includes a slider (7), and the slider (7) is provided with a pattern steel sheet fixing structure according to any one of claims 1-9.

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