Electric gear transmission mold adjusting safety device

Abstract

The utility model relates to the technical field of mold adjusting safety devices of vulcanizing machines, in particular to an electric gear transmission mold adjusting safety device. The electric gear transmission mold adjusting safety device is used for a traditional hydraulic tire vulcanizing machine with a lower pressurizing cylinder and mold adjusting functions, is arranged below a lower mold, and is used for preventing the lower mold from falling in production and use due to leakage or failure of a hydraulic part in a hydraulic oil way in daily use. According to the device, one second gear is driven to rotate or a first gear is driven to rotate, all the second gears can be driven to rotate at the same time, so that all the screws are driven to synchronously move in the vertical direction, the screws move along with the lower die all the time, physical protection is effectively achieved, and the safety of the die adjusting device is improved; and the falling risk of the mold is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of die - setting safety devices for vulcanizers, and particularly relates to an electric gear - driven die - setting safety device. Background Art

[0002] The die - setting device is mainly used to adjust the clamping force of the mold and the moving stroke of the template to meet the installation requirements of molds with different thicknesses and specifications. It can usually adjust the distance between the moving template and the fixed template to ensure that the mold can be correctly and stably installed on an injection molding machine or similar equipment. At present, for a hydraulic tire vulcanizer with a lower - pressure type that combines die - setting function, its anti - falling safety depends on the protection of hydraulic components (hydraulic locks / balance valves). However, the hydraulic components will inevitably fail and be damaged, resulting in internal leakage and unloading. At this time, the mold may fall, causing casualties and equipment damage. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: how to improve the safety of the die - setting device and avoid the risk of mold falling.

[0004] To solve the above - mentioned technical problem, the technical solution adopted by the utility model is as follows:

[0005] An electric gear - driven die - setting safety device, comprising:

[0006] A frame;

[0007] A first gear, which is rotatably connected to the frame, and the axial direction of the first gear is the vertical direction;

[0008] A second gear, which is rotatably connected to the frame, meshes with the first gear, the axial direction of the second gear is the vertical direction, and a plurality of second gears are circumferentially arrayed around the axis of the first gear. A nut is coaxially connected to the middle of each second gear, and a threaded hole is provided in the middle of the nut;

[0009] A driving mechanism, which is used to drive one of the second gears to rotate or drive the first gear to rotate;

[0010] A screw rod, and a plurality of screw rods are respectively in threaded fit connection with the threaded holes of the nuts fixed to each second gear;

[0011] A connecting plate, the upper ends of each screw rod are at the same height and are respectively rotatably connected to the connecting plate, and the connecting plate is located below the lower die of the vulcanizer.

[0012] Further, in the structure of the above-mentioned electric gear transmission die-setting safety device, the driving mechanism includes a third gear, a coupling and a motor. The motor is connected to the frame, the third gear is rotatably connected to the frame, and the motor is drivingly connected to the third gear through the coupling for driving the third gear to rotate. The third gear meshes with one of the second gears.

[0013] Further, in the structure of the above-mentioned electric gear transmission die-setting safety device, a proximity switch is also connected to the frame. The proximity switch faces the tooth part of the third gear, and the number of teeth passed by the third gear during rotation is obtained through the proximity switch to judge the rotation angle of the third gear.

[0014] Further, in the structure of the above-mentioned electric gear transmission die-setting safety device, the diameter of the first gear is larger than that of the second gear.

[0015] Further, in the structure of the above-mentioned electric gear transmission die-setting safety device, the diameter of the third gear is smaller than that of the second gear.

[0016] Further, in the structure of the above-mentioned electric gear transmission die-setting safety device, the shape of the first gear is an annular ring, and an annular convex edge is provided on the inner side of the first gear; a plurality of support shafts are connected to the inner side of the first gear in a circumferential array. The support shafts are vertically connected to the frame, the support shafts are coaxially connected to the inner ring of the bearing, and the annular convex edge of the first gear is mounted on the outer ring of the bearing.

[0017] The beneficial effects of the present invention are as follows: The electric gear transmission die-setting safety device involved in the present invention is used for a hydraulic tire vulcanizer that uses a traditional lower pressing cylinder and simultaneously takes into account die setting. It is arranged below the lower mold. During daily use, in order to prevent hydraulic components in the hydraulic oil circuit from leaking or failing, resulting in the lower mold falling during production use, causing casualties and equipment damage, this device drives one of the second gears to rotate or drives the first gear to rotate, which can simultaneously drive all the second gears to rotate, thereby driving all the screws to move synchronously in the vertical direction, enabling the screws to perform a moment-following movement on the lower mold, effectively providing physical protection, improving the safety of the die-setting device, and avoiding the risk of the mold falling. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of an electric gear transmission die-setting safety device according to a specific embodiment of the present invention;

[0019] Figure 2 It is a partial structural cross-sectional view of an electric gear transmission die-setting safety device according to a specific embodiment of the present invention;

[0020] Reference Numeral Explanation:

[0021] 1. First gear; 11. Annular convex edge; 12. Support shaft; 13. Bearing;

[0022] 2. Second gear; 21. Nut;

[0023] 3. Driving mechanism; 31. Third gear; 32. Coupling; 33. Motor;

[0024] 4. Screw;

[0025] 5. Connecting plate;

[0026] 6. Proximity switch. Specific embodiments

[0027] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the drawings.

[0028] Please refer to Figures 1 to 2 , the specific embodiment of the present utility model relates to an electric gear transmission die-adjusting safety device, comprising:

[0029] Frame;

[0030] The first gear 1, the first gear 1 is rotatably connected to the frame, and the axial direction of the first gear 1 is the vertical direction;

[0031] The second gear 2, the second gear 2 is rotatably connected to the frame, the second gear 2 meshes with the first gear 1, the axial direction of the second gear 2 is the vertical direction, and a plurality of second gears 2 are circumferentially arrayed around the axis of the first gear 1. A nut 21 is coaxially connected to the middle of each second gear 2, and a threaded hole is provided in the middle of the nut 21;

[0032] The driving mechanism 3, the driving mechanism 3 is used to drive one of the second gears 2 to rotate or drive the first gear 1 to rotate;

[0033] The screw 4, a plurality of screws 4 are respectively threadedly engaged with the threaded holes of the nuts fixed to each second gear;

[0034] The connecting plate 5, the upper ends of each screw 4 are at the same height and are respectively rotatably connected to the connecting plate 5, and the connecting plate 5 is located below the lower die of the vulcanizer.

[0035] The above electric gear transmission mold adjustment safety device is used for hydraulic tire vulcanizers that have traditional lower pressure cylinders and mold adjustment at the same time. It is set below the lower mold. In daily use, in order to prevent leakage or failure of hydraulic parts in the hydraulic oil circuit, causing the lower mold to fall during production and use, resulting in casualties and equipment damage, this device drives one of the second gears 2 to rotate or drives the first gear 1 to rotate, and can simultaneously drive all the second gears 2 to rotate, thereby driving all the screws 4 to move synchronously in the vertical direction, so that the screws 4 always follow the lower mold to move, effectively provide physical protection, improve the safety of the mold adjustment device, and avoid the risk of mold falling. The screw 4 and the connecting plate 5 are synchronously lifted and lowered vertically and always follow the movement of a certain distance below the lower mold. The self-locking property of the nut 21 and the screw 4 can ensure that when the lower mold falls accidentally, the screw 4 becomes an effective physical support to prevent unnecessary losses.

[0036] As a preferred embodiment, the driving mechanism 3 includes a third gear 31, a coupling 32 and a motor 33, the motor 33 is connected to the frame, the third gear 31 is rotatably connected to the frame, the motor 33 is transmission connected to the third gear 31 through the coupling 32, and is used to drive the third gear 31 to rotate, and the third gear 31 is meshed with one of the second gears 2.

[0037] As a preferred embodiment, the frame is further connected to a proximity switch 6, which faces the tooth portion of the third gear 31. The number of teeth passed by the third gear 31 during the rotation process is obtained by the proximity switch 6 to determine the rotation angle of the third gear 31.

[0038] In the above implementation mode, the number of signals of each tooth sensed by the proximity switch 6 can also be obtained through the electrical system technology, and the transmission ratio with the second gear 2 can be calculated to obtain the number of rotations of the second gear 2. Then, the height of the screw 4 controlled by the motor 33 can be accurately determined by calculating the number of rotations corresponding to the pitch of the nut 21 and the screw 4, thereby effectively ensuring that the screw 4 always moves synchronously with the lower mold and does not directly contact the lower mold.

[0039] As a preferred embodiment, the diameter of the first gear 1 is larger than that of the second gear 2 .

[0040] As a preferred embodiment, the diameter of the third gear 31 is smaller than the diameter of the second gear 2 .

[0041] As a preferred embodiment, the first gear 1 is in the shape of a circular ring, and an annular flange 11 is provided on the inner side of the first gear 1; a plurality of support shafts 12 are connected to the inner side of the first gear 1 in a circular array, and the support shafts 12 are vertically connected to the frame, and the support shafts 12 are coaxially connected to the inner ring of the bearing 13, and the annular flange 11 of the first gear 1 is mounted on the outer ring of the bearing 13.

[0042] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. An electric gear transmission mold adjustment safety device, It is characterized in that include: frame; A first gear, the first gear is rotatably connected to the frame, and the axial direction of the first gear is a vertical direction; A second gear, the second gear is rotatably connected to the frame, the second gear is meshed with the first gear, the axial direction of the second gear is a vertical direction, a plurality of second gears are distributed in a circular array around the axis of the first gear, a nut is coaxially connected to the middle of each second gear, and a threaded hole is provided in the middle of the nut; A driving mechanism, the driving mechanism is used to drive one of the second gears to rotate or drive the first gear to rotate; Screw rods, wherein the plurality of screw rods are respectively threadedly matched with threaded holes of nuts fixed to each second gear; The upper end of each screw rod has the same height and is rotatably connected to the connecting plate. The connecting plate is located below the lower mold of the vulcanizer.

2. The electric gear transmission mold adjustment safety device according to claim 1, It is characterized in that The driving mechanism includes a third gear, a coupling and a motor, wherein the motor is connected to the frame, the third gear is rotatably connected to the frame, the motor is transmission-connected to the third gear via the coupling, and is used to drive the third gear to rotate, and the third gear is meshed with one of the second gears.

3. The electric gear transmission mold adjustment safety device according to claim 2, It is characterized in that The frame is also connected to a proximity switch, which faces the tooth portion of the third gear. The number of teeth passed by the third gear during the rotation process is obtained by the proximity switch to determine the rotation angle of the third gear.

4. The electric gear transmission mold adjustment safety device according to claim 1, It is characterized in that The first gear has a larger diameter than the second gear.

5. The electric gear transmission mold adjustment safety device according to claim 2, It is characterized in that The diameter of the third gear is smaller than the diameter of the second gear.

6. The electric gear transmission mold adjustment safety device according to claim 1, It is characterized in that The first gear is in the shape of a circular ring, and an annular convex edge is provided on the inner side of the first gear; a plurality of support shafts are connected to the inner side of the first gear in a circular array, the support shafts are vertically connected to the frame, the support shafts are coaxially connected to the inner ring of the bearing, and the annular convex edge of the first gear is mounted on the outer ring of the bearing.

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