Adjustable pressurizing mechanism for vulcanizing machine and vulcanizing machine

Abstract

The utility model provides an adjustable pressurizing mechanism for vulcanizer and vulcanizer, its adjusting structure is simple, the reliability is good, adjusting efficiency is high, it includes base and the crossbeam of base upper end, said crossbeam is driven by the motion device to do the vertical lift motion, the mould and sensor are clamped between base and crossbeam, and the sensor is clamped between base and crossbeam. The distance sensor is used for measuring the distance between the cross beam and the base; the pressurizing oil cylinder is a short-stroke oil cylinder, the head of a piston rod of the pressurizing oil cylinder is provided with an annular groove part, the piston rod of the pressurizing oil cylinder is arranged downwards, the annular groove part can sequentially penetrate through the cross beam and the base to extend out of the lower end of the base, and an oil injection port is formed in the pressurizing oil cylinder; the locking mechanism is arranged at the lower end of the base, the locking mechanism comprises a clamping plate and a locking driving device, the locking driving device can drive the clamping plate to be matched with each other to surround the annular groove part, and clamping teeth capable of being matched with an annular groove in the annular groove part are arranged on the clamping plate.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanizing equipment, in particular to an adjustable pressurizing mechanism for a vulcanizing machine and a vulcanizing machine. Background Art

[0002] The molds used in tire vulcanizers often have different models and specifications and different heights. Therefore, in order to adapt to different mold heights, vulcanizers are often equipped with mold height adjustment devices. The mold height adjustment devices widely used in existing equipment are as follows: 1. The motor drives the sprocket or gear, thereby driving the threaded pair (screw + nut) connected to the sprocket or gear to move, and the mold height is adjusted through the linear motion of the threaded pair, such as a RIB type tire shaping vulcanizer center mechanism disclosed in the utility model patent with publication number CN219947361U; 2. The long-stroke cylinder directly pushes the support plate, and the mold height is adjusted through the linear motion of the support plate; 3. The long-stroke cylinder drives the pull rod to adjust the mold height.

[0003] Existing devices often cannot escape two limitations: either use a threaded pair to achieve adjustment, or use a long-stroke cylinder to achieve adjustment. The threaded pair adjustment structure is complex, requires high precision, is costly, and has the risk of getting stuck and causing device failure; while the long-stroke cylinder adjustment structure is simple in structure, but since multiple cylinders are required to work together to achieve long-stroke movement, after multiple reciprocating movements, due to different internal resistances of the cylinders, synchronization is often poor, which reduces the service life of the mold; at the same time, the long-stroke cylinder requires a large flow rate to replenish oil, which increases the equipment action time and reduces the efficiency of the entire machine.

[0004] Utility Model

[0005] The utility model aims to provide an adjustable pressurizing mechanism for a vulcanizer and a vulcanizer, which have simple adjustment structure, good reliability and high adjustment efficiency.

[0006] The technical solution is as follows: an adjustable pressurizing mechanism for a vulcanizer, comprising a base and a crossbeam at the upper end of the base, the crossbeam being driven by a motion device to perform vertical lifting motion, a mold being clamped between the base and the crossbeam, characterized in that it also comprises:

[0007] A sensor for measuring the distance between the beam and the base;

[0008] A pressurized oil cylinder, wherein the pressurized oil cylinder is a short-stroke oil cylinder, a ring groove is provided on the piston rod head of the pressurized oil cylinder, the piston rod of the pressurized oil cylinder is arranged downward, the ring groove can sequentially pass through the cross beam and the base and extend from the lower end of the base, and an oil filling port is provided on the pressurized oil cylinder;

[0009] The locking mechanism is arranged at the lower end of the base, and the locking mechanism includes a card plate and a locking drive device. The locking drive device can drive the card plate to cooperate with each other to embrace the annular groove part, and the card plate is provided with a card tooth that can cooperate with the annular groove on the annular groove part.

[0010] Furthermore, the pressurizing cylinder is fixed to the cross beam by bolts, a heat insulating pad is arranged between the pressurizing cylinder and the cross beam, and a wear-resistant plate is arranged between the locking drive device and the base.

[0011] Furthermore, the movement device includes a cylinder installed on the base, and a piston rod of the cylinder is connected to the crossbeam.

[0012] Furthermore, the width of the annular groove on the annular groove portion is greater than the width of the latching teeth.

[0013] Furthermore, the locking drive device adopts a locking drive cylinder, the clamping plate includes a first clamping plate and a second clamping plate, the piston rod of the locking drive cylinder is connected to the first clamping plate, and the locking mechanism also includes guide plates arranged on both sides of the locking drive cylinder in parallel with the locking drive cylinder, and guide grooves are arranged on both sides of the first clamping plate and the second clamping plate respectively corresponding to the guide plates, and guide rods arranged parallel to the locking drive cylinder are also arranged on both sides of the locking drive cylinder, and the guide rods and the locking drive cylinder are respectively fixed on the connecting mounting plates, and the guide rods pass through the first clamping plate and are connected to the second clamping plate, and an anti-falling limit plate is also arranged on the end of the guide plate away from the locking drive cylinder.

[0014] Furthermore, the sensor is a displacement sensor, which includes a sensor body and a sensor head. The sensor head is fixed on the beam, and the sensor body is fixed on the base and is arranged perpendicular to the beam.

[0015] Furthermore, the annular groove portion is provided with a plurality of annular grooves.

[0016] Furthermore, a guide sleeve is provided on the crossbeam, and a guide column is provided on the base to cooperate with the guide sleeve for guiding.

[0017] A vulcanizing machine comprises the above-mentioned adjustable pressurizing mechanism for the vulcanizing machine.

[0018] The adjustable pressurizing mechanism of the utility model is used for a vulcanizer, which is jointly arranged with the pressurizing mechanism on the vulcanizer. The mechanism composition is simple, there is no complicated transmission system, and height adjustment is achieved only by relying on a short-stroke oil cylinder and a displacement sensor. Hydraulic oil is injected through the oil filling port of the short-stroke oil cylinder, and the piston rod and the clamping plate of the pressurizing oil cylinder are clamped in cooperation with the locking mechanism, and the hydraulic oil is injected to drive the cross bar to move downward to achieve height adjustment to adapt to molds of different heights. At the same time, the short-stroke pressurizing oil cylinder can also realize the application of clamping force, and by arranging multiple sets of annular grooves on the piston rod of the pressurizing oil cylinder, it can adapt to molds of different heights, and the cylinder stroke is reduced, thereby improving the pressurizing efficiency. The short-stroke pressurizing oil cylinder can also avoid the complete opening of the mold due to the internal pressure of the mold after the clamping force disappears when the cylinder or the oil pipe leaks, and the internal capsule explodes due to the imbalance of internal and external pressures, accompanied by foreign body ejection, thereby protecting production personnel and improving equipment safety.

[0019] In addition, the time spent on adjusting molds of different heights by the adjustable pressurizing mechanism for the vulcanizer of the utility model is much less than that of the traditional threaded transmission adjustment system, which saves time and is highly efficient. It is also different from using a large-stroke cylinder to achieve similar functions, which requires a large amount of hydraulic flow each time, resulting in low pressurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the adjustable pressurizing mechanism for a vulcanizing machine in an embodiment from a first viewing angle;

[0021] Figure 2 is a perspective view of the adjustable pressurizing mechanism for a vulcanizing machine in the embodiment from a second viewing angle;

[0022] Figure 3 is a top view of an adjustable pressurizing mechanism for a vulcanizing machine in an embodiment;

[0023] Figure 4 for Figure 3 Sectional view along AA direction;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of point B;

[0025] Figure 6 is a schematic diagram of a locking mechanism in an embodiment;

[0026] Figure 7 is a cross-sectional schematic diagram of an adjustable pressurizing mechanism for a vulcanizing machine in another embodiment;

[0027] Figure 8 It is a double-station vulcanizing machine in the embodiment. DETAILED DESCRIPTION

[0028] See Figures 1 to 7 The utility model is an adjustable pressurizing mechanism for a vulcanizer, comprising a base 1 and a beam 2 at the upper end of the base 1, the beam 2 being driven by a motion device to perform vertical lifting motion, the base 1 and the beam 2 clamping a mold, and further comprising:

[0029] Sensor 4, used to measure the distance between the beam 2 and the base 1, and obtain the position of the beam 2;

[0030] The pressurizing oil cylinder 5 in the embodiment is a short-stroke oil cylinder. The piston rod head of the pressurizing oil cylinder 5 is provided with an annular groove 501. The piston rod of the pressurizing oil cylinder 5 is arranged downward. The annular groove 501 can pass through the crossbeam 2 and the base 1 in sequence and extend from the lower end of the base 1. The pressurizing oil cylinder 5 is provided with an oil filling port 502;

[0031] The locking mechanism 6 is arranged at the lower end of the base. The locking mechanism includes a clamping plate 601 and a locking drive device. The locking drive device can drive the clamping plate 601 to cooperate with each other and embrace the annular groove part 501. The clamping plate 601 is provided with a clamping tooth 602 that can cooperate with the annular groove 503 on the annular groove part 501.

[0032] Specifically in one embodiment, the pressurizing cylinder 5 is fixed to the cross beam 2 by bolts, and a thermal insulation pad 7 is arranged between the pressurizing cylinder 5 and the cross beam 2, and the thermal insulation pad is installed above the cross beam 2. The pressurizing cylinder 5 and the thermal insulation pad 2 are fixed together above the cross beam 2 to isolate the heat transferred from the mold and the cross beam to the pressurizing cylinder 5, thereby improving the service life of the pressurizing cylinder 5, and a wear-resistant plate 10 is arranged between the locking drive device and the base 1.

[0033] In the embodiment, the moving device of the vulcanizer adopts a cylinder 3 installed on the base 1, the piston rod of the cylinder 3 is connected to the crossbeam 2, the cylinder 3 can push the crossbeam 1, and the clamping force is provided by the pressurized cylinder 5.

[0034] See Figure 6Specifically, in one embodiment, the locking drive device adopts a locking drive cylinder 603, the card plate includes a first card plate 601A and a second card plate 601B, the piston rod of the locking drive cylinder 603 is connected to the first card plate 601A, and the locking mechanism also includes a guide plate 604 arranged on both sides of the locking drive cylinder 603 in parallel with the locking drive cylinder 603, and the first card plate 601A and the second card plate 601B are respectively provided with guide grooves 605 corresponding to the guide plates 604, and the locking drive cylinder 603 is also provided with a guide plate 604 arranged on both sides of the locking drive cylinder 603 in parallel with the locking drive cylinder 603. The guide rod 606 and the locking drive cylinder 603 are respectively fixed on the connecting mounting plate 607. The guide rod passes through the first clamping plate 601A and is connected to the second clamping plate 601B. An anti-drop limit plate 608 is also provided at the end of the guide plate 606 away from the locking drive cylinder. In the embodiment, the second clamping plate 601B does not move because it is connected to the guide rod, and the first clamping plate 601A is connected to the piston rod of the locking drive cylinder 603. It will move closer to the second clamping plate 601B under the drive of the locking drive cylinder 603, so that the piston part of the pressurized oil cylinder can be tightly held.

[0035] The embodiment also arranges the width of the upper annular groove 3 of the annular groove portion to be greater than the width of the latch tooth 602 , so as to facilitate the latch plate of the locking mechanism to hold the annular groove portion tightly for alignment. In the embodiment, the width of the upper annular groove 3 of the annular groove portion is arranged to be more than twice the width of the latch tooth 602 .

[0036] In order to enable simpler and more accurate measurements, the sensor in the embodiment adopts a displacement sensor, which includes a sensor body 401 and a sensor head 402. The sensor head 402 is fixed on the beam 2, and the sensor body 401 is fixed on the base 1 and is arranged perpendicular to the beam 2. The position information of the beam is obtained by measuring the displacement of the beam. In other embodiments of the utility model, a distance sensor, for example, can also be used.

[0037] In one embodiment of the utility model, a plurality of annular grooves 503 are provided on the annular groove portion 501, and by providing multiple groups of annular grooves on the piston rod of the pressurizing oil cylinder, molds of different heights can be accommodated, the oil cylinder stroke is reduced, and the pressurizing efficiency is improved.

[0038] In one embodiment of the utility model, a guide sleeve 8 is provided on the beam 2, and a guide column 9 is provided on the base 1 to cooperate with the guide sleeve 8 for guiding, so as to improve the stability of the operation of the beam 2. A mechanical safety lock 11 is also provided on the guide sleeve to ensure that the beam will not accidentally fall and injure people when it is in the highest position.

[0039] The following describes the working process of the adjustable pressurizing mechanism for a vulcanizer in the embodiment during pressurization: after the mold is placed on the base, the crossbeam starts to descend under the drive of the motion device of the vulcanizer. When the crossbeam makes a vertical downward movement, the sensor obtains the height of the crossbeam relative to the base through the position change of the sensing block. When the sensor senses that it reaches the preset position, the motion device of the vulcanizer stops moving.

[0040] Subsequently, hydraulic oil is introduced into the oil filling port of the pressurized cylinder, and the piston rod moves relative to the cylinder body. Since the width of the upper ring groove of the ring groove part is smaller than the width of the latch tooth, the piston rod still has room to move, so that the upper surface of the ring groove at the top of the piston rod can be attached to the lower surface of the latch tooth; thereafter, under the relative action of force, the crossbeam and the cylinder body move downward together to press the mold, and high-pressure hydraulic oil continues to be introduced to increase the force and realize the application of the clamping force.

[0041] The following describes the working process of adjusting the height of the adjustable pressurizing mechanism for a vulcanizer in the embodiment after replacing molds of different heights: after replacing molds of different heights and placing them on the base, the crossbeam starts to descend under the drive of the motion device of the vulcanizer. When the crossbeam makes a vertical descending motion, the sensor obtains the height of the crossbeam relative to the base through the position change of the sensing block. When the crossbeam descends to a certain height from the mold, the motion device of the vulcanizer stops moving;

[0042] Subsequently, hydraulic oil is introduced into the oil filling port of the pressurized cylinder, and the piston rod moves relative to the cylinder body. Since the width of the upper ring groove of the ring groove part is smaller than the width of the latch tooth, the piston rod still has room to move, so that the upper surface of the ring groove at the top of the piston rod can be attached to the lower surface of the latch tooth; thereafter, under the relative action of force, the crossbeam and the cylinder body move downward together until the crossbeam contacts the upper surface of the mold, and the sensor records the current position, and calculates the preset position at which the moving device drives the crossbeam to stop based on the current position. Thereafter, without changing the mold, the moving device will drive the crossbar to descend to the preset position and then stop, and then the locking mechanism locks the holding ring part, and high-pressure hydraulic oil continues to be introduced into the pressurized cylinder to increase the force and realize the application of the clamping force.

[0043] The adjustable pressurizing mechanism for the vulcanizer provided in the embodiment can easily cope with changes in mold height and can be quickly adjusted through simple hydraulic control and sensor feedback, demonstrating extremely high flexibility and adaptability.

[0044] The adjustable pressurizing mechanism of the utility model is used for a vulcanizer, which is jointly arranged with the pressurizing mechanism on the vulcanizer. The mechanism composition is simple, and there is no complicated transmission system. The height adjustment is achieved only by relying on a short-stroke oil cylinder and a displacement sensor. The hydraulic oil is injected through the oil filling port of the short-stroke oil cylinder, and the piston rod and the clamping plate of the pressurizing oil cylinder are clamped in cooperation with the locking mechanism. The hydraulic oil is injected to drive the cross bar to move downward to achieve height adjustment to adapt to molds of different heights. Compared with the traditional threaded transmission adjustment system, there is no need for complicated manual rotation or mechanical transmission operation, which greatly shortens the adjustment time after the mold is replaced, and significantly improves the work efficiency. It improves the reliability and durability of the equipment, and reduces the downtime caused by the failure of the complex transmission system.

[0045] At the same time, the short-stroke pressurized oil cylinder can also achieve the application of mold clamping force, and by setting multiple sets of ring grooves on the piston rod of the pressurized oil cylinder, it can adapt to molds of different heights, reduce the cylinder stroke, and improve the pressurization efficiency. Through the hydraulic oil pressure regulation in the pressurized oil cylinder, the precise control of the mold clamping force can be achieved. During the pressurization process, with the continuous injection of high-pressure hydraulic oil, the force gradually increases, ensuring that the mold is effectively compressed under uniform force and in accordance with process requirements, which is conducive to improving the quality and consistency of vulcanized products. In addition, the design of the short-stroke oil cylinder only injects an appropriate amount of hydraulic oil when needed to achieve height adjustment and mold clamping force application, avoiding the situation where the large-stroke oil cylinder consumes a large amount of hydraulic flow during the adjustment process, and significantly improves the energy efficiency ratio of the hydraulic system. This not only saves energy and reduces operating costs, but also avoids problems such as overheating and wear caused by frequent and high-flow operation of the hydraulic system, extending the service life of hydraulic components. The short-stroke pressurized cylinder can also avoid the complete opening of the mold due to the internal pressure of the mold after the clamping force disappears when the cylinder or oil pipe leaks, and the internal capsule explodes due to the imbalance of internal and external pressures, accompanied by the ejection of foreign matter, thereby protecting production personnel and improving equipment safety.

[0046] In an embodiment of the present invention, a vulcanizing machine is also provided, comprising the above-mentioned adjustable pressurizing mechanism for a vulcanizing machine, such as Figure 8 As shown, the vulcanizer has two of the above-mentioned adjustable pressurizing mechanisms for the vulcanizer, which can realize double-station processing.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable pressurizing mechanism for a vulcanizer, comprising a base and a crossbeam at the upper end of the base, wherein the crossbeam is driven by a motion device to perform vertical lifting motion, and a mold is clamped between the base and the crossbeam, characterized in that: Also includes: A sensor for measuring the distance between the beam and the base; A pressurized oil cylinder, wherein the pressurized oil cylinder is a short-stroke oil cylinder, a ring groove is provided on the piston rod head of the pressurized oil cylinder, the piston rod of the pressurized oil cylinder is arranged downward, the ring groove can sequentially pass through the cross beam and the base and extend from the lower end of the base, and an oil filling port is provided on the pressurized oil cylinder; The locking mechanism is arranged at the lower end of the base, and the locking mechanism includes a card plate and a locking drive device. The locking drive device can drive the card plate to cooperate with each other to embrace the annular groove part, and the card plate is provided with a card tooth that can cooperate with the annular groove on the annular groove part.

2. The adjustable pressure mechanism for a vulcanizing machine according to claim 1, characterized in that: The pressurizing oil cylinder is fixed on the cross beam by bolts, a heat insulating pad is arranged between the pressurizing oil cylinder and the cross beam, and a wear-resistant plate is arranged between the locking drive device and the base.

3. The adjustable pressure mechanism for a vulcanizing machine according to claim 1, characterized in that: The moving device comprises an oil cylinder installed on the base, and a piston rod of the oil cylinder is connected to the crossbeam.

4. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 1, characterized in that: The width of the annular groove on the annular groove portion is greater than the width of the latch teeth.

5. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 1, characterized in that: The locking drive device adopts a locking drive cylinder, the card plate includes a first card plate and a second card plate, the piston rod of the locking drive cylinder is connected to the first card plate, the locking mechanism also includes guide plates arranged on both sides of the locking drive cylinder in parallel with the locking drive cylinder, the first card plate and the second card plate are respectively provided with guide grooves on both sides corresponding to the guide plates, guide rods arranged parallel to the locking drive cylinder are also arranged on both sides of the locking drive cylinder, the guide rods and the locking drive cylinder are respectively fixed on the connecting mounting plates, the guide rods pass through the first card plate and then are connected to the second card plate, and an anti-falling limit plate is also provided on the end of the guide plate away from the locking drive cylinder.

6. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 1, characterized in that: The sensor is a displacement sensor, which includes a sensor body and a sensor head. The sensor head is fixed on the crossbeam, and the sensor body is fixed on the base and is arranged perpendicular to the crossbeam.

7. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 1, characterized in that: The annular groove portion is provided with a plurality of annular grooves.

8. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 1, characterized in that: A guide sleeve is arranged on the crossbeam, and a guide column is arranged on the base to cooperate with the guide sleeve for guiding.

9. The adjustable pressurizing mechanism for a vulcanizing machine according to claim 8, characterized in that: The guide sleeve is also provided with a mechanical safety lock.

10. A vulcanizing machine, characterized in that: The invention comprises an adjustable pressurizing mechanism for a vulcanizing machine as described in any one of claims 1 to 9.

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