Quick replacement structure of segmented mold of tire forming vulcanizer

Abstract

The utility model relates to the technical field of disassembly and assembly mechanisms, and discloses a quick replacement structure of a segmented mold of a tire forming vulcanizer, which comprises a piston rod, a connecting shaft head and a connecting disc, and the bottom of the piston rod is connected with the connecting shaft head which is in threaded connection with the piston rod through a transition nut. The transition nut and the connecting shaft head are connected and fixed through the fixing bolt, the connecting shaft head and the connecting disc are in butt joint through the cross spline, the steel ball abuts against the interior of an arc-shaped groove in the cross spline through mutual cooperation of the spring, the steel ball and the fastening bolt in the connecting disc, and the cross spline on the connecting shaft head is locked. The cross-shaped spline is prevented from loosening, when the die needs to be replaced, only the connecting shaft head needs to be rotated through a wrench, so that the cross-shaped spline overcomes the force of the spring, locking of the cross-shaped spline is relieved, the cross-shaped spline can be rotated to be aligned with the butt joint groove, the connecting shaft head can vertically slide along the butt joint groove, and rapid replacement of the die is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly mechanisms, in particular to a rapid replacement structure for a movable die of a tire shaping vulcanizing machine. Background Technique

[0002] At present, most of the known tire shaping vulcanizing machines adopt molds with a movable die structure. The molds with a movable die structure are respectively fixed together with the connecting plate of the movable die driving device and the vulcanizing chamber or the pallet. During the actual mold replacement process, it is necessary to fix the mold and the vulcanizing chamber or the pallet together with screws externally. The piston rod of the movable die driving device is screwed together with the connecting plate, and then the vulcanizing machine is opened and the mold is fixed together with the connecting plate of the movable die driving device by screws from inside the mold in the vulcanizing chamber. The operation is inconvenient and accompanied by the high temperature of the equipment. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a rapid replacement structure for a movable die of a tire shaping vulcanizing machine to solve the above technical problems.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solution: A rapid replacement structure for a movable die of a tire shaping vulcanizing machine, including a piston rod, a coupling shaft head and a connecting plate. The bottom of the piston rod is connected with a coupling shaft head. A transition nut is connected inside the coupling shaft head. The transition nut is threadedly connected to the bottom of the piston rod. A cross spline is provided at the bottom of the coupling shaft head. A docking hole is opened at the top of the connecting plate. Four docking grooves are evenly opened along the circumferential direction at the opening of the docking hole. The size of the docking groove is adapted to the cross spline. Four positioning holes are evenly opened along the circumferential direction on the connecting plate. A steel ball, a spring and a fastening bolt are sequentially arranged in the positioning hole.

[0007] Preferably, an arc groove adapted to the steel ball is opened on the outer side wall of the cross spline.

[0008] Preferably, four mounting holes are opened on the coupling shaft head. The four mounting holes are evenly arranged along the circumferential direction on the coupling shaft head.

[0009] Preferably, fixing bolts are arranged in the mounting holes, and four threaded holes adapted to the fixing bolts are opened on the outer side wall of the transition nut.

[0010] Preferably, all four positioning holes penetrate through the connecting plate and extend into the docking hole.

[0011] Preferably, one end of the spring abuts against the steel ball, and the other end of the spring abuts against the fastening bolt.

[0012] Preferably, a plurality of through holes are evenly formed in the circumferential direction of the connecting plate.

[0013] Compared with the prior art, the present utility model provides a rapid replacement structure for a movable die of a tire shaping vulcanizing machine, having the following beneficial effects:

[0014] 1. In the present utility model, a transition nut is threadedly connected to the piston rod, and the transition nut is connected and fixed to the coupling shaft head through a fixing bolt. The coupling shaft head is docked with the connecting plate through a cross spline. Through the mutual cooperation of a spring, steel balls and fastening bolts in the connecting plate, the steel balls are pressed against the arc grooves on the cross spline to lock the cross spline on the coupling shaft head and prevent the cross spline from loosening. When the die needs to be replaced, only a wrench is required to rotate the coupling shaft head, so that the cross spline overcomes the force of the spring, thereby releasing the locking of the cross spline, and then the cross spline can be rotated to align with the docking groove, so that the coupling shaft head can vertically slide along the docking groove to realize the rapid replacement of the die. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 is an exploded schematic diagram of the main structure of the present utility model;

[0017] Figure 3 is a sectional schematic diagram of structures such as the coupling shaft head and fastening bolts of the present utility model;

[0018] Figure 4 is a sectional structural schematic diagram of structures such as the coupling shaft head, connecting plate and steel balls of the present utility model.

[0019] Wherein: 1. Piston rod; 2. Coupling shaft head; 3. Connecting plate; 4. Docking groove; 5. Through hole; 6. Positioning hole; 7. Fastening bolt; 8. Cross spline; 9. Arc groove; 10. Mounting hole; 11. Transition nut; 12. Threaded hole; 13. Docking hole; 14. Fixing bolt; 15. Steel ball; 16. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Please refer to Figures 1-4 , a rapid replacement structure for a flexible die of a tire shaping and vulcanizing machine, comprising a piston rod 1, a coupling shaft head 2 and a connection disk 3. The bottom of the piston rod 1 is connected with the coupling shaft head 2. A transition nut 11 is connected inside the coupling shaft head 2. The transition nut 11 is threadedly connected to the bottom of the piston rod 1. A cross spline 8 is provided at the bottom of the coupling shaft head 2. A docking hole 13 is formed at the top of the connection disk 3. Four docking grooves 4 are evenly formed in the circumferential direction at the opening of the docking hole 13. The size of the docking groove 4 is adapted to the cross spline 8. Four positioning holes 6 are evenly formed in the circumferential direction on the connection disk 3. A steel ball 15, a spring 16 and a fastening bolt 7 are sequentially arranged in the positioning hole 6.

[0024] By providing a threaded connection between the transition nut 11 and the piston rod 1, and connecting and fixing the transition nut 11 and the coupling shaft head 2 through a fixing bolt 14, and docking the coupling shaft head 2 and the connection disk 3 through the cross spline 8, through the mutual cooperation of the spring 16, the steel ball 15 and the fastening bolt 7 inside the connection disk 3, the steel ball 15 is pressed against the arc groove 9 on the cross spline 8 to lock the cross spline 8 on the coupling shaft head 2 and prevent the cross spline 8 from loosening. When the die needs to be replaced, only by rotating the coupling shaft head 2 with a wrench, the cross spline 8 can overcome the force of the spring 16, thereby unlocking the cross spline 8, and then the cross spline 8 can be rotated to align with the docking groove 4, so that the coupling shaft head 2 can slide vertically along the docking groove 4 to achieve rapid replacement of the die, and the locking force of the cross spline 8 can be achieved by rotating the fastening bolt 7.

[0025] Specifically, in this embodiment, an arc-shaped groove 9 adapted to the steel ball 15 is provided on the outer side wall of the cross spline 8. The steel ball 15 can be pushed by the spring 16 to be tightly pressed in the arc-shaped groove 9, so as to realize the locking and fixing of the cross spline 8.

[0026] Specifically, in this embodiment, four mounting holes 10 are provided on the coupling shaft head 2. The four mounting holes 10 are uniformly arranged on the coupling shaft head 2 in the circumferential direction. A fixing bolt 14 is provided in the mounting hole 10, and four threaded holes 12 adapted to the fixing bolt 14 are provided on the outer side wall of the transition nut 11.

[0027] By providing structures such as the mounting holes 10 and the fixing bolts 14, the coupling shaft head 2 and the transition nut 11 can be conveniently connected and fixed.

[0028] Specifically, in this embodiment, all four positioning holes 6 penetrate through the connecting disk 3 and extend into the docking hole 13.

[0029] Specifically, in this embodiment, one end of the spring 16 abuts against the steel ball 15, and the other end of the spring 16 abuts against the fastening bolt 7.

[0030] Specifically, in this embodiment, a plurality of through holes 5 are uniformly provided on the connecting disk 3 in the circumferential direction, which can facilitate the fixing of the connecting disk 3 by passing bolts through the through holes 5.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick replacement structure for a flexible mold of a tire shaping vulcanizing machine, comprising a piston rod, a connecting shaft head and a connecting plate, characterized in that: The bottom of the piston rod is connected to a connecting shaft head, a transition nut is connected inside the connecting shaft head, the transition nut is threadedly connected to the bottom of the piston rod, a cross spline is arranged at the bottom of the connecting shaft head, a docking hole is opened at the top of the connecting disk, four docking grooves are evenly opened at the opening of the docking hole along the circumferential direction, the size of the docking grooves is adapted to the cross spline, four positioning holes are evenly opened on the connecting disk along the circumferential direction, and steel balls, springs and fastening bolts are arranged in sequence in the positioning holes.

2. The quick replacement structure of the active mold of the tire shaping vulcanizing machine according to claim 1 is characterized by: An arc groove matched with the steel ball is provided on the outer side wall of the cross spline.

3. The quick replacement structure of the active mold of the tire shaping vulcanizing machine according to claim 1 is characterized by: The coupling shaft head is provided with four mounting holes, and the four mounting holes are evenly arranged on the coupling shaft head along the circumferential direction.

4. The quick-change structure for the flexible mold of a tire shaping vulcanizing machine according to claim 3, characterized in that: A fixing bolt is arranged in the installation hole, and four threaded holes matched with the fixing bolt are opened on the outer side wall of the transition nut.

5. The quick replacement structure of the active mold of the tire shaping vulcanizing machine according to claim 1 is characterized in that: The four positioning holes all penetrate the connecting plate and extend into the docking hole.

6. The quick replacement structure of the active mold of the tire shaping vulcanizing machine according to claim 1 is characterized by: One end of the spring abuts against the steel ball, and the other end of the spring abuts against the fastening bolt.

7. The quick-change structure for the flexible mold of a tire shaping and vulcanizing machine according to claim 1, characterized in that: The connection plate is evenly provided with a plurality of through holes along the circumferential direction.

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