High-air-tightness lower chuck for tire mold

Abstract

The utility model discloses a high-air-tightness lower chuck for a tire mold, which comprises a chuck body, the inner end face of the chuck body is an integrally molded surface, and the outer end face of the chuck body is sequentially provided with a circular groove and an insert mounting groove from inside to outside; the area of the insert mounting groove is larger than that of the circular groove, and the insert mounting groove covers the outer end of the circular groove; the insert is clamped, embedded and fixedly mounted in the insert mounting groove, and a through groove is formed in the insert; a bolt head at the top of the T-shaped bolt extends into the circular groove through the through groove, and the bolt head abuts against the inner end face of the insert by deflecting the bolt head. Compared with the prior art, the lower chuck has the advantages that the structural form of the lower chuck body is improved, the connecting mode between the lower chuck body and the central mechanism connecting disc is changed, and the risk of air leakage at the connecting position between the lower chuck body and the central mechanism connecting disc is avoided fundamentally.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire molds, and in particular relates to a high-airtightness lower clamping plate used for a tire mold. Background Art

[0002] The existing tire mold includes many parts, such as the cavity of the molding part, the centripetal mechanism for providing pressure for the mold closing, and the clamp part for fixing the capsule inside. For details, please refer to Figure 1 shown. Figure 1 When fixing the lower clamping plate to the connecting plate of the center mechanism, it is often necessary to connect them by driving four bolts from the inner end of the lower clamping plate so that it can move along with the up and down movement of the center mechanism. After driving the bolts, in order to ensure the airtightness of the top of the bolts, it is necessary to weld a welding piece on the upper end to prevent the steam (or nitrogen) filled into the tire during the vulcanization process from leaking.

[0003] However, after long-term use, that is, under the alternating influence of hot and cold environments, there will be a risk of air leakage at the welding points of this structure, and the disadvantages of this structure cannot be eliminated, so it is necessary to regularly test the sealing performance of the welding piece. Utility Model Content

[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0005] The utility model provides a high-airtightness lower chuck for a tire mold, which fundamentally avoids the risk of air leakage between the lower chuck and the center mechanism connecting disk by improving the structural form of the lower chuck body and changing the connection mode between the lower chuck and the center mechanism connecting disk.

[0006] The utility model discloses a high-airtight lower chuck for a tire mold, comprising:

[0007] A disc body, wherein the inner end surface of the disc body is an integrally formed surface, and the outer end surface of the disc body is provided with a circular groove and an insert installation groove in sequence from the inner to the outer side; the insert installation groove has an area larger than that of the circular groove and covers the outer end of the circular groove;

[0008] An insert is embedded and fixedly installed in the insert installation groove, and the insert is provided with a through groove;

[0009] The bolt head at the top of the T-shaped bolt extends through the through slot into the circular slot and is deflected to make the bolt head abut against the inner end surface of the insert.

[0010] In some embodiments, the inner end surface of the disk body is a smooth flat structure surface.

[0011] In some embodiments, the insert is fixedly connected to the insert mounting groove via a connecting bolt and a connecting bolt hole.

[0012] In some embodiments, the insert is fixedly connected to the insert mounting groove by welding.

[0013] In some embodiments, the insert mounting grooves are provided in plurality and are evenly distributed around the central hole of the disk body.

[0014] In some embodiments, the insert is an arc-shaped plate-like structure; the through slot is located at the geometric center of the insert; connecting bolt holes are provided on the upper and lower sides of the through slot; and the outer edges of the insert on the left and right sides of the through slot are provided with inwardly recessed welding edges.

[0015] In some embodiments, the through groove is concentrically arranged with the circular groove, the through groove is a rectangular parallelepiped structure with arc-shaped ends; the length of the through groove is equal to the diameter of the circular groove; the shape and size of the T-shaped bolt head are adapted to the through groove.

[0016] In some embodiments, the number of the insert mounting slots is 3-6.

[0017] In some embodiments, the number of the connecting bolt holes is 4 and they are symmetrically arranged.

[0018] In some embodiments, the welding edge is located between the connecting bolt holes on the upper and lower sides of the through groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the traditional connection mode with the central mechanism connection plate is changed, the inner end surface of the bottom of the lower chuck plate is changed to an integrally formed surface without any connection gap, which fundamentally avoids the occurrence of air leakage, and at the same time, by designing the connection structure mode and installation form of the circular groove, the insert installation groove, the insert, the through groove, and the T-bolt, the bottom of the lower chuck plate and the central mechanism connection plate can still be reliably fixedly connected. The overall structure of the device is simple and reliable, and the risk of air leakage can be eliminated after installation, thereby reducing the cost of later maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a structural schematic diagram of the background technology.

[0022] Figure 2 It is a structural schematic diagram of the utility model.

[0023] Figure 3 It is a schematic diagram of the distribution structure of the insert of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the insert of the utility model.

[0025] Description of the drawings: disc body 1, circular groove 2, insert mounting groove 3, insert 4, T-shaped bolt 5, welding edge 6, connecting bolt 7, connecting bolt hole 8, through groove 9. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described and illustrated in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments provided by the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, the utility model can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed by the utility model, some changes in design, manufacturing or production based on the technical content disclosed by the utility model are just conventional technical means, and should not be understood as the content disclosed by the utility model is insufficient.

[0028] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments without conflict.

[0029] A high airtight lower chuck for a tire mold, comprising:

[0030] The disc body 1 has an inner end surface which is an integrally formed surface, and an outer end surface of the disc body 1 is provided with a circular groove 2 and an insert mounting groove 3 in sequence from the inner to the outer side; the insert mounting groove 3 has an area larger than that of the circular groove 2 and covers the outer end of the circular groove 2;

[0031] The insert 4 is inserted and fixedly installed in the insert installation groove 3, and a through groove 9 is provided on the insert 4;

[0032] The bolt head at the top of the T-shaped bolt 5 extends into the circular groove 2 through the through groove 9 and is deflected so as to abut against the inner end surface of the insert 4.

[0033] Since the inner end surface of the disk body 1 adopts an integrally formed surface structure design without any gaps, there is no risk of air leakage on the inner end surface. Figure 1 and Figure 2 middle, Figure 1 Since it needs to be connected by bolts, and the bolts adopt a through-connection structure design, in order to ensure Figure 1 The air tightness of the middle and lower chucks requires welding of welding pieces above the bolts. Figure 2 In the present application, the leakage phenomenon is fundamentally avoided by improving the connection method. When making the connection, the insert 4 is first installed and fixed in the insert installation groove 3, and then the top bolt head of the T-bolt 5 is inserted into the circular groove 2 through the through groove 9 on the insert 4, and then the T-bolt 5 is rotated to ensure that the T-bolt 5 is completely engaged with the insert 4 to limit its axial displacement, and then a locking nut is installed on the T-bolt 5 to achieve a quick and reliable connection and fixation.

[0034] In some embodiments, the inner end surface of the disk body 1 is a smooth and flat structural surface to make the whole more beautiful and flat.

[0035] In some embodiments, the insert 4 can be fixedly connected to the insert installation slot 3 by means of connecting bolts 7 and connecting bolt holes 8, or can be connected by welding, or can be connected by both methods. Specifically, the insert 4 is an arc-shaped plate structure; the through slot 9 is located at the geometric center of the insert 4; connecting bolt holes 8 are provided on the upper and lower sides of the through slot 9; and the outer edges of the insert 4 on the left and right sides of the through slot 9 are provided with inwardly concave welding edges 6. During installation, firstly, the connection bolts 7 and the connecting bolt holes 8 are used for quick alignment and connection. To ensure the strength and reliability of the overall rigidity, welding is performed through the reserved welding edges 6 to ensure that the insert 4 will not fall off.

[0036] To further ensure the reliability of the connection, multiple insert installation grooves 3 are provided and evenly distributed around the central hole of the disc body 1. Figure 3 and Figure 4 As shown, preferably, the number of the insert installation grooves 3 is 3-6. For example, in this embodiment, the number of the insert installation grooves 3 is 4, and the number of corresponding inserts 4 is also 4.

[0037] In some embodiments, the through slot 9 is concentrically arranged with the circular slot 2 , the through slot 9 is a rectangular parallelepiped structure with arc-shaped ends; the length of the through slot 9 is equal to the diameter of the circular slot 2 ; the shape and size of the bolt head of the T-shaped bolt 5 are adapted to the through slot 9 .

[0038] The above arrangement ensures the stability of the T-bolt 5 during installation and connection, and prevents the T-bolt 5 from radial displacement and deflection, making the connection more stable and reliable.

[0039] In some embodiments, the weld edge 6 is located between the connecting bolt holes 8 on the upper and lower sides of the through slot 9. First, the weld edge length using the above position is longer, and second, the connecting bolt 7 and the connecting bolt hole 8 are not affected.

[0040] Its working principle is:

[0041] Insert the insert 4 into the insert installation groove 3, first perform preliminary connection and fixation through the connecting bolts 7 and the connecting bolt holes 8, and then weld through the reserved welding edges 6 on both sides of the insert 4, so that the insert 4 is firmly installed in the installation groove 3 to ensure a reliable connection between the two, and then ensure that the disk body 1 will reliably move with it when the central mechanism moves in the later stage. Select a T-shaped bolt 5, where the bolt head of the T-shaped bolt 5 is a rectangular parallelepiped structure and its two ends are arc-shaped, insert the bolt head of the T-shaped bolt 5 into the circular groove 2 through the through groove 9 on the insert 4, and then rotate 90° so that the bolt head of the T-shaped bolt 5 is clamped on both sides of the inner end surface of the insert 4. Later, a locking nut can be installed on the threaded structure of the T-shaped bolt 5 to achieve a fixed connection between the disk body 1 and the central mechanism.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high airtight lower chuck for a tire mold, characterized in that: include: A disc body, wherein the inner end surface of the disc body is an integrally formed surface, and the outer end surface of the disc body is provided with a circular groove and an insert installation groove in sequence from the inner to the outer side; the insert installation groove has an area larger than that of the circular groove and covers the outer end of the circular groove; An insert is embedded and fixedly installed in the insert installation groove, and the insert is provided with a through groove; The bolt head at the top of the T-shaped bolt extends through the through slot into the circular slot and is deflected to make the bolt head abut against the inner end surface of the insert.

2. The high airtight lower chuck according to claim 1, characterized in that: The inner end surface of the disk body is a smooth and flat structural surface.

3. The high airtight lower chuck according to claim 1, characterized in that: The insert is fixedly connected to the insert installation groove through a connecting bolt and a connecting bolt hole.

4. The high airtight lower chuck according to claim 1, characterized in that: The insert is fixedly connected to the insert installation groove by welding.

5. The high airtight lower chuck according to claim 1, characterized in that: The insert installation grooves are provided in plurality and are evenly distributed around the central hole of the disc body.

6. The high airtight lower chuck according to claim 1, characterized in that: The insert is an arc-shaped plate structure; the through slot is located at the geometric center of the insert; connecting bolt holes are provided on the upper and lower sides of the through slot; and inwardly concave welding edges are provided on the outer edges of the insert on the left and right sides of the through slot.

7. The high airtight lower chuck according to claim 1, characterized in that: The through slot is concentrically arranged with the circular slot, the through slot is a rectangular parallelepiped structure with arc-shaped ends; the length of the through slot is equal to the diameter of the circular slot; the shape and size of the T-shaped bolt head are adapted to the through slot.

8. The high airtight lower chuck according to claim 5, characterized in that: The number of the insert installation slots is 3-6.

9. The high airtight lower chuck according to claim 6, characterized in that: The connecting bolt holes are provided with four and are symmetrically arranged.

10. The high airtight lower chuck according to claim 6, characterized in that: The welding edge is located between the connecting bolt holes on the upper and lower sides of the through groove.

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