Five-link rear pressure roller drive device for tire building machine shaping drum

Abstract

The invention discloses a five-link rear pressure roller driving device for a tire shaping drum, comprising a left pressure roller and a right pressure roller, wherein the left pressure roller and the right pressure roller are arranged on a left pressure mechanism and a right pressure mechanism, and the left pressure mechanism and the right pressure mechanism are arranged on a left five-link mechanism and a left driving mechanism; each driving mechanism comprises a front moving frame, a rear moving frame and a middle moving frame between the front and rear moving frames; the five-link mechanism comprises an active rod I and driven rods II, III, IV and V, one end of the rod I is hinged on the middle moving frame, one end of the rod V is hinged on the front moving frame, one end of the rod II is hinged on the rear moving frame, the rod III is arranged above the rod II, the bending parts of the two are hinged and one end of the rod III is hinged to the other end of the rod V, the other end of the rod I is arranged below the bending part of the rod II and is hinged on the rod II coaxially with the rod III, one end of the rod IV is hinged to the other end of the rod II, and the other end of the rod IV and the other end of the rod III are hinged to the pressure mechanism.

Description

Technical Field

[0001] The invention relates to a component mechanism of a tire shaping vulcanizer, in particular to a five-link rear pressure roller driving device for a shaping drum of a tire shaping machine. Background Art

[0002] The rear pressure roller mechanism of the shaping drum of the existing engineering tire wheel forming machine has been using the combined pressure roller of the turbine worm four-link structure introduced from abroad in the 1980s. The housing and turbine of this structure need to be cast, the housing needs to be sealed, and it needs to be matched during installation. Since the copper alloy turbine needs to be replaced after wear, the cost of processing, manufacturing and assembly is high and maintenance is difficult. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a five-link rear pressure roller driving device for a tire building machine shaping drum which is simple in structure, reasonable in structure and easy to maintain.

[0004] The five-link rear pressure roller driving device of the tire building machine shaping drum capable of solving the above technical problems comprises left and right symmetrical pressure rollers, the difference being:

[0005] 1. The left and right pressure rollers are respectively arranged on the left and right symmetrical pressing mechanisms, the left and right pressing mechanisms are respectively arranged on the left and right symmetrical five-link mechanisms, and the left and right five-link mechanisms are respectively arranged on the left and right symmetrical driving mechanisms.

[0006] 2. Each driving mechanism includes a front moving frame and a rear moving frame that move left and right synchronously, and a middle moving frame that is arranged between the front and rear moving frames and moves in the opposite direction to the front and rear moving frames.

[0007] 3. Each five-link mechanism includes an active rod I, a bending type driven rod II, a bending type driven rod III, a driven rod IV and a driven rod V. One end of the active rod I is hinged on the middle moving frame, one end of the driven rod V is hinged on the front moving frame, one end of the bending type driven rod II is hinged on the rear moving frame, the bending type driven rod III is arranged above the bending type driven rod II, the bending parts of the two are hinged and one end of the bending type driven rod III is hinged to the other end of the driven rod V, the other end of the active rod I is arranged below the bending part of the bending type driven rod II and is coaxially hinged to the bending type driven rod II with the bending type driven rod III, one end of the driven rod IV is hinged to the other end of the bending type driven rod II, and the other end of the driven rod IV and the other end of the bending type driven rod III are both hinged to the pressing mechanism.

[0008] Furthermore, a structure of the pressing mechanism includes a base hinged on the follower rod IV and the bent follower rod III, one end of a pressure arm is hinged to the base and the hinged position corresponds to the hinged position of the base and the bent follower rod III, a cylinder body of a pressure cylinder is hinged on the base, the cylinder rod of the pressure cylinder is hinged to the pressure arm, and a pressure roller is installed on the other end of the pressure arm.

[0009] Furthermore, the front and rear moving frames are installed on the corresponding moving seats, and the moving seats are installed on the front and rear linear guides through the corresponding front and rear slide seats I. The moving seats are driven by a ball screw transmission pair I driven by a servo motor through a synchronous belt pulley transmission pair; the middle moving frame is installed on the middle linear guide through the corresponding slide seat II, and the middle moving frame is driven by a ball screw transmission pair II driven by a reduction motor.

[0010] Beneficial effects of the present invention:

[0011] 1. In the structure of the five-link rear pressure roller driving device of the tire forming machine of the present invention, the five-link pair driven by the ball screw replaces the traditional spline plus worm gear structure to realize the rolling of the tread, sidewall and apex rubber of the tire blank, that is, to realize the vertical linkage rolling of the arc surface of the tire blank with a U-shaped cross section.

[0012] 2. The present invention has the characteristics of simple structure, low processing cost, convenient installation and maintenance, long service life and high motion precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an axonometric view of an embodiment of the present invention, showing that the left and right pressure rollers are in a non-working state.

[0014] Figure 2 for Figure 1 Schematic diagram of the left and right pressure rollers in the working state in the implementation mode.

[0015] Figure number identification: 1. Pressure roller; 2. Front moving frame; 3. Rear moving frame; 4. Middle moving frame; 5. Active rod I; 6. Bend-type driven rod II; 7. Bend-type driven rod III; 8. Driven rod IV; 9. Driven rod V; 10. Base; 11. Pressure arm; 12. Pressure cylinder; 13. Moving seat; 14. Linear guide; 15. Servo motor; 16. Synchronous belt pulley transmission pair; 17. Ball screw transmission pair I; 18. Middle linear guide; 19. Reduction motor; 20. Ball screw transmission pair II; 21. Frame. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0017] The tire building machine shaping drum five-link rear pressure roller driving device of the present invention comprises left and right symmetrical pressure rollers 1, the left and right pressure rollers 1 are respectively arranged on left and right symmetrical pressing mechanisms, the left and right pressing mechanisms are respectively arranged on left and right symmetrical five-link mechanisms, and the left and right five-link mechanisms are respectively arranged on left and right symmetrical driving mechanisms. Figure 1 shown.

[0018] Each driving mechanism includes a front moving frame 2 and a rear moving frame 3 mounted on a moving seat 13, a middle moving frame 4 is arranged between the front moving frame 2 and the rear moving frame 3, the moving seat 13 is mounted on the front and rear linear guide rails 14 (left and right) through the front and rear slides I, the front and rear linear guide rails 14 are mounted on the bottom plate of the frame 21, the middle moving frame 4 is mounted on the middle linear guide rail 18 through the corresponding slide II, the middle linear guide rail 18 is supported and mounted on the bottom plate of the frame 21 and is located on the moving seat Between the front moving frame 2 and the rear moving frame 3 above 13, the moving seat 13 is driven by a ball screw transmission pair Ⅰ17 driven by a servo motor 15 through a synchronous belt pulley transmission pair 16, and the ball screws of the left and right ball screw transmission pairs Ⅰ17 corresponding to the left and right moving seats 13 are coaxially connected and rotate in opposite directions. The middle moving frame 4 is driven by a ball screw transmission pair Ⅱ20 driven by a reduction motor 19, and the ball screws of the left and right ball screw transmission pairs Ⅰ17 corresponding to the left and right middle moving frames 4 are coaxially connected and rotate in opposite directions, such as Figure 1 shown.

[0019] Each five-link mechanism (with Figure 1 The structure of the five-link mechanism on the left side of the middle right is explained as an example) comprising an active rod I5, a ">"-shaped bent follower rod II6, a ">"-shaped bent follower rod III7, a follower rod IV8 and a follower rod V9, the right front end of the active rod I5 is hinged on the middle moving frame 4 (the middle moving frame 4 is located on the left side between the front moving frame 2 and the rear moving frame 3 at this time), the right front end of the follower rod V9 is hinged on the front moving frame 2, the right front end of the front side bending rod of the bending follower rod II6 is hinged on the rear moving frame 3, and the bending The follower rod III7 is arranged above the bending follower rod II6, the bending parts of the two are hinged and the right front end of the front bending rod of the bending follower rod III7 is hinged to the left rear end of the follower rod V9, the left rear end of the active rod I5 is located below the bending part of the bending follower rod II6 and is hinged on the bending follower rod II6 coaxially with the bending follower rod III7, that is, the bending follower rod III7, the bending follower rod II6 and the active rod I5 are coaxially hinged, and the left front end of the follower rod IV8 is hinged to the left rear end of the rear bending rod of the bending follower rod II6.

[0020] Each pressing mechanism (in Figure 1The left side downward pressing mechanism on the middle right is taken as an example to illustrate its structure) comprises a base 10, a pressing arm 11 and a pressing cylinder 12. The bottom of the left end of the base 10 is hinged to the right rear end of the driven rod IV8, and the bottom of the right end of the base 10 is hinged to the right rear end of the rear bending rod of the bending type driven rod III7. The lower end of the pressing arm 11 is hinged to the right end of the base 10, and the lower left end of the cylinder body of the pressing cylinder 12 is hinged to the left end of the base 10. The cylinder rod of the pressing cylinder 12 extending obliquely to the upper right is hinged on the pressing arm 11. The upper end of the pressing arm 11 is equipped with a corresponding pressing roller 1 through a rotating pair. The pressing roller 1 is located in front of the upper end of the pressing arm 11 and is located in a vertical plane.

[0021] The operation mode of the present invention is:

[0022] 1. In the preparatory stage of rolling the tire blank, the left and right ball screw transmission pairs Ⅰ17 drive the left and right front moving frames 2 and the rear moving frames 3 to move synchronously toward each other (i.e., relative to each other), and the left and right ball screw transmission pairs Ⅱ20 drive the left and right middle moving frames 4 to move synchronously away from each other. During the process of the left and right front moving frames 2 and the rear moving frames 3 moving toward each other, the left and right pressure rollers 1 gradually move closer to each other. During the process of the left and right middle moving frames 4 moving away from each other, the left and right pressure rollers 1 are driven to rotate in opposite directions to relative positions through the linkage of the left and right five-bar mechanisms. In the tire blank rolling position, the left and right pressure rollers 1 rotate to face each other and fit each other as a whole, such as Figure 2 shown.

[0023] 2. During the tire blank rolling stage, the cylinder rods of the left and right pressure cylinders 12 extend synchronously and push the left and right pressure arms 11 to flip backward, driving the left and right pressure rollers 1 to press backward and downward to roll the tire blank.

[0024] 3. After rolling is completed, the cylinder rods of the left and right pressure cylinders 12 retract synchronously and drive the left and right pressure rollers 1 back to the vertical position; the left and right ball screw transmission pairs Ⅰ17 drive the left and right front moving frames 2 and rear moving frames 3 to move synchronously in opposite directions, and the left and right ball screw transmission pairs Ⅱ20 drive the left and right middle moving frames 4 to move synchronously toward each other, and the left and right pressure rollers 1 separate from each other and return to their initial positions.

Claims

1. A five-link rear roller driving device for a tire building machine shaping drum, comprising left and right symmetrical rollers (1), characterized in that: The left and right symmetrical pressing rollers (1) are respectively arranged on the left and right symmetrical pressing mechanisms, the left and right pressing mechanisms are respectively arranged on the left and right symmetrical five-link mechanisms, and the left and right five-link mechanisms are respectively arranged on the left and right symmetrical driving mechanisms; Each driving mechanism comprises a front moving frame (2) and a rear moving frame (3) which move left and right synchronously, and a middle moving frame (4) which is arranged between the front and rear moving frames (2, 3) and moves in the opposite direction to the front and rear moving frames (2, 3); Each five-link mechanism comprises an active rod I (5), a bent driven rod II (6), a bent driven rod III (7), a driven rod IV (8) and a driven rod V (9), one end of the active rod I (5) is hingedly mounted on the middle moving frame (4), one end of the driven rod V (9) is hingedly mounted on the front moving frame (2), one end of the bent driven rod II (6) is hingedly mounted on the rear moving frame (3), the bent driven rod III (7) is arranged above the bent driven rod II (6), and the two are hingedly mounted on the middle moving frame (4). The bending part of the driven rod is hinged and one end of the bent driven rod III (7) is hinged to the other end of the driven rod V (9). The other end of the active rod I (5) is arranged below the bending part of the bent driven rod II (6) and is hinged to the bent driven rod II (6) coaxially with the bent driven rod III (7). One end of the driven rod IV (8) is hinged to the other end of the bent driven rod II (6). The other end of the driven rod IV (8) and the other end of the bent driven rod III (7) are both hinged to the pressing mechanism.

2. The five-link rear pressure roller driving device of the tire building machine shaping drum according to claim 1 is characterized in that: The pressing mechanism comprises a base (10) hingedly mounted on a driven rod IV (8) and a bent driven rod III (7); one end of a pressing arm (11) is hingedly mounted to the base (10) and the hinged portion corresponds to the hinged portion of the base (10) and the bent driven rod III (7); a cylinder body of a pressing cylinder (12) is hingedly mounted on the base (10) and the hinged portion corresponds to the hinged portion of the base (10) and the driven rod IV (8); the cylinder rod of the pressing cylinder (12) is hingedly mounted to the pressing arm (11); and a pressing roller (1) is mounted on the other end of the pressing arm.

3. The five-link rear pressure roller driving device of the tire building machine shaping drum according to claim 1 is characterized in that: The front and rear moving frames (2, 3) are mounted on corresponding moving seats (13), and the moving seats (13) are mounted on front and rear linear guide rails (14) via corresponding front and rear slide seats I. The moving seats (13) are driven by a servo motor (15) through a synchronous belt pulley drive pair (16) and a ball screw transmission pair I (17). The middle moving frame (4) is mounted on a middle linear guide rail (18) via a corresponding slide seat II, and the middle moving frame (4) is driven by a ball screw transmission pair II (20) driven by a reduction motor (19).

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