Crab clamp type tire unloading opening and closing device

Abstract

The utility model discloses a crab clamp type tire unloading opening and closing device, which comprises an opening and closing mechanism for controlling a left tire unloading rotating arm and a right tire unloading rotating arm on a connecting frame to synchronously open and close, and is characterized in that the opening and closing mechanism comprises a synchronous rack device, a left toothed rotating drum, a right toothed rotating drum and a linear driving device, the inner ends of the left tire unloading rotating arm and the right tire unloading rotating arm are fixedly connected to the left toothed rotating cylinder and the right toothed rotating cylinder, gears of the left toothed rotating cylinder and the right toothed rotating cylinder are meshed with racks of the synchronous rack device, the linear driving device is connected with the synchronous rack device, and the synchronous rack device can drive the left tire unloading rotating arm and the right tire unloading rotating arm to rotate synchronously under driving of the linear driving device. The device has the advantages of being simple in structure, stable in movement and high in precision.

Description

Technical Field

[0001] The utility model relates to a component structure of a tire shaping and vulcanizing machine, in particular to a crab clamp type tire unloading opening and closing device. Background Art

[0002] The conventional structure of the crab-clamp tire unloading opening and closing device on existing tire vulcanizers is as follows: a push plate with a slide groove is fixed above and below the rotation center of the left and right rotating arms, and a push rod with a bearing is fixed to the head of the linear drive device. When the bearing moves linearly within the push plate's slide groove, the left and right rotating arms simultaneously rotate about the rotation center. In this structure, the slide groove is easily worn due to the long-term back-and-forth sliding of the bearing in the groove, resulting in an increasing gap between the slide groove and the bearing. The tire unloading arm is prone to shaking, and the opening and closing are unstable. If the left and right rotating arms are not in place, they can easily collide with the pot, affecting normal use. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a crab clamp type tire unloading opening and closing device, which has the advantages of simple structure, smooth movement and high precision.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] The crab clamp type tire unloading opening and closing device includes an opening and closing mechanism that controls the synchronous opening and closing of the left and right tire unloading arms on the connecting frame. The difference is that the opening and closing mechanism includes a synchronous rack device, a left geared rotating drum, a right geared rotating drum, and a linear drive device, wherein the left and right geared rotating drums are fixed on the connecting frame, and the inner ends of the left and right tire unloading arms are respectively fixed on the left and right geared rotating drums. The gears of the left and right geared rotating drums are engaged with the racks of the synchronous rack device, and the linear drive device is connected to the synchronous rack device. Driven by the linear drive device, the synchronous rack device can drive the left and right geared rotating drums to rotate, thereby realizing the synchronous rotation of the left and right tire unloading arms.

[0006] Furthermore, the synchronous rack device is in the shape of a gate, wherein racks are symmetrically provided on the beams on both sides, and the crossbeam is connected to the output end of the linear drive device.

[0007] Compared with the prior art, the advantages and effects of the present invention are:

[0008] 1. The coordination of the synchronous rack device, the left and right geared drums, and the linear drive device enables the tire unloading arms to open and close synchronously through the meshing movement of the gears and racks, ensuring the synchronization of the opening and closing of the left and right tire unloading arms and making the movement more stable.

[0009] 2. The device has a simple structure and is easy to install. There is no relative wear between the components, which effectively guarantees the accuracy of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the main view of the utility model;

[0011] Figure 2 It is a top view of the utility model.

[0012] Figure number identification: 1. Left tire unloading arm; 2. Right tire unloading arm; 3. Synchronous rack device; 4. Left geared rotating drum; 5. Right geared rotating drum; 6. Linear drive device; 7. Connecting frame; 8. Vulcanizing chamber. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the following embodiments, but the present invention is not limited to these embodiments.

[0014] The safety pin indicating device of the vulcanizing machine described in this embodiment is as follows: Figure 1 and 2 As shown, it includes an opening and closing mechanism for controlling the synchronous opening and closing of the left tire unloading arm 1 and the right tire unloading arm 2. The outer ends of the left and right tire unloading arms 1 and 2 are cantilevered forward above the vulcanizing chamber 8, and the inner ends of the left and right tire unloading arms 1 and 2 are installed on the connecting frame 7 through the opening and closing mechanism. The opening and closing mechanism includes a synchronous rack device 3, a left geared rotary drum 4, a right geared rotary drum 5, and a linear drive device 6.

[0015] like Figure 1 and 2 As shown, the left geared drum 4 and the right geared drum 5 are fixed on the connecting frame 7, and the synchronous rack device 3 is in the shape of a gate, wherein racks are symmetrically provided on the beams on both sides, and the racks on both sides are respectively engaged with the transmission gears on the left geared drum 4 and the right geared drum 5. The crossbeam of the synchronous rack device 3 is connected to the output end of the linear drive device 6, and the linear drive device 6 drives the synchronous rack device 3 to perform gear and rack meshing movement with the left and right geared drums 4 and 5, thereby realizing the opening or closing of the left and right tire unloading arms 1 and 2.

[0016] In this embodiment, the linear drive device 6 is specifically a telescopic cylinder, and the cylinder rod of the cylinder is connected to the crossbeam of the synchronous rack device 3.

[0017] The working principle of this embodiment is as follows:

[0018] 1. Figure 2 The solid line in the middle shows the open state of the left and right tire unloading arms 1 and 2, at which time the rod of the telescopic cylinder is at its longest extension;

[0019] 2. When the rod of the telescopic cylinder gradually retracts, it drives the synchronous rack device 3 to move synchronously. At this time, the racks on both sides respectively engage with the transmission gears on the left and right toothed rotating drums 4 and 5 to make gear rack meshing movements, thereby driving the left and right tire unloading arms 1 and 2 to gradually close. Figure 2 The state is shown by the dotted line.

Claims

1. A crab clamp type tire unloading opening and closing device, comprising an opening and closing mechanism for controlling the synchronous opening and closing of the left and right tire unloading rotating arms (1, 2) on a connecting frame (7), characterized in that: The opening and closing mechanism comprises a synchronous rack device (3), a left geared rotating drum (4), a right geared rotating drum (5), and a linear drive device (6), wherein the left and right geared rotating drums (4, 5) are fixed on a connecting frame (7), the inner ends of the left and right tire unloading rotating arms (1, 2) are respectively fixed on the left and right geared rotating drums (4, 5), the gears of the left and right geared rotating drums (4, 5) are meshed with the racks of the synchronous rack device (3), the linear drive device (6) is connected to the synchronous rack device (3), and under the drive of the linear drive device (6), the synchronous rack device (3) can drive the left and right tire unloading rotating arms (1, 2) to realize synchronous rotation.

2. The crab clamp type tire unloading opening and closing device according to claim 1, characterized in that: The synchronous rack device (3) is in the shape of a gate, wherein racks are symmetrically provided on the beams on both sides, and the cross beam is connected to the output end of the linear drive device (6).

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