Safety pin indicating device of vulcanizing machine

Abstract

The utility model discloses a safety pin indicating device of a vulcanizing machine, which comprises a safety hanging bracket, an air cylinder, a safety pin shaft, an induction plate, an indicating plate, a switch plate and a detection switch, the safety hanging bracket is fixed at the top of an upper die of the vulcanizing machine, the air cylinder is fixed on the safety hanging bracket, and a piston rod of the air cylinder is connected with the safety pin shaft. The induction plate is vertically installed on the safety pin shaft and acts simultaneously with the safety pin shaft, one end of the indication plate is connected with the induction plate, the other end of the indication plate is suspended and points to a blank area on the side face of the safety hanging bracket, two switch plates are arranged on the other side of the safety hanging bracket side by side, and a detection switch is installed on each switch plate. The safety pin shaft locking and unlocking device is simple in structure, an operator can observe the locking and unlocking conditions of the safety pin shaft more clearly and visually on the operation surface of the vulcanizing machine, and therefore the safety of the operator and equipment of the vulcanizing machine is guaranteed.

Description

Technical Field

[0001] The utility model relates to a component structure of a tire shaping vulcanizer, in particular to a safety pin indicating device of a vulcanizer. Background Art

[0002] Due to structural limitations, the current safety pin mechanism for opening and closing the molds of vulcanizers is typically installed at the top of the upper mold. Once the mold is fully opened, the safety pin, driven by a pneumatic cylinder, inserts into the safety pin hole to lock the upper mold. The safety pin mechanism is typically located near the center of the upper mold, making it virtually invisible from the operator's operating panel. Determining whether the safety pin mechanism is locked or unlocked relies solely on switch detection and PLC control. However, during operation, flawed programming or improperly installed switches can lead to problems. If the safety pin is not actually unlocked, but the switch indicates to the PLC that it is, closing the mold at this point can cause the upper mold to deform, potentially rendering the entire vulcanizer useless. This poses a serious safety hazard. Furthermore, if the safety pin is not actually unlocked during maintenance, but the switch indicates that it is locked, personnel entering the vulcanizer for repairs risk oil leaks from the upper mold and the upper mold sliding down on them.

[0003] Utility model patent CN203650788U discloses a safety pin device for a giant tire vulcanizer. This device uses a cylinder to extend and retract to loosen and lock the safety pin, while also driving an observation panel to rotate circumferentially, allowing the operator to clearly and intuitively see the safety pin's loosening and locking status. However, the device is complex and requires an additional display, increasing production and maintenance costs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a vulcanizer safety pin indicator device with a simple structure. Through the new structural design, the operator can more clearly and intuitively observe the loosening and locking status of the safety pin shaft on the vulcanizer operating surface, thereby ensuring the safety of the vulcanizer operator and equipment.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] The vulcanizer safety pin indicating device includes a safety hanger, a cylinder, a safety pin shaft, a sensor plate, an indicator plate, a switch plate, and a detection switch. The safety hanger is fixed to the top of the upper mold of the vulcanizer, the cylinder is fixed to the safety hanger, the piston rod of the cylinder is connected to the safety pin shaft, the sensor plate is vertically installed on the safety pin shaft and moves simultaneously with the safety pin shaft, one end of the indicator plate is connected to the sensor plate, and the other end is suspended in the air pointing to the blank area on the side of the safety hanger. Two switch plates are arranged side by side on the other side of the safety hanger, and a detection switch is installed on each switch plate.

[0007] Furthermore, the blank area on the side of the safety hanger is divided into a locking area on the left and an unlocking area on the right, and the two switch plates on the other side of the safety hanger are respectively arranged in the corresponding locking area and unlocking area, wherein the detection switch on the left switch plate corresponds to locking, and the detection switch on the right switch plate corresponds to unlocking.

[0008] Furthermore, the indicator plate is covered with an easily identifiable identification layer.

[0009] Furthermore, the locking area and the unlocking area of ​​the safety hanger are respectively covered with identification layers that are easy to identify.

[0010] Compared with the existing technology, the advantages and effects of the present invention are: the indicator plate and the sensor plate are linked with the safety pin shaft, and the sensor plate can also synchronously trigger the detection switch and PLC program control. The operator can not only obtain the loosening and locking prompts of the safety pin shaft through the control system, but also can clearly and intuitively visually observe the actual loosening and locking status of the safety pin shaft. While further simplifying the structure, this device not only reduces the maintenance cost of the equipment, but also plays the role of double prompting and double insurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the locking state structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the unlocked state of the utility model.

[0013] Figure number identification: 1. Indicator plate; 2. Safety pin; 3. Safety hanger; 4. Switch plate; 5. Induction plate; 6. Detection switch; 7. Cylinder. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the following embodiments, but the present invention is not limited to these embodiments.

[0015] The safety pin indicating device of the vulcanizing machine described in this embodiment is as follows: Figure 1As shown, it includes a safety hanger 1, a cylinder 2, a safety pin 3, a sensor plate 4, an indicator plate 5, a switch plate 6, and a detection switch 7. The entire vulcanizer safety pin indicator device is fixed to the top of the vulcanizer mold through the safety hanger 1 and rises and falls with the opening and closing of the mold by the main machine. The cylinder 2 is fixed to the safety hanger 1, and the piston rod of the cylinder 2 is connected to the safety pin 3. The sensor plate 4 is vertically installed on the safety pin 3 and moves simultaneously with the safety pin 3. One end of the indicator plate 5 is connected to the sensor plate 4, and the other end is suspended and pointed to the blank area on the side of the safety hanger 1. The blank area is divided into a locking area on the left and an unlocking area on the right. Two switch plates 6 are arranged side by side on the other side of the safety hanger 1. The two switch plates 6 are respectively arranged in the corresponding locking area and unlocking area. Each switch plate 6 is installed with a detection switch 7, wherein the detection switch 7 on the left switch plate 6 corresponds to locking, and the detection switch 7 on the right switch plate 6 corresponds to unlocking.

[0016] In this embodiment, the indicator plate 5 and the locking area and the unlocking area of ​​the safety hanger 1 are covered with an easily identifiable identification layer. Specifically, they can be coated with paint coatings of different colors, or labels of different colors can be pasted on the surface to facilitate observation and identification by the operator. For example, the indicator plate 5 is coated with yellow paint, the locking area is coated with red paint, and the unlocking area is coated with green paint.

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

[0018] 1. If Figure 1 As shown, when the main machine is in the mold opening position, the piston rod of the cylinder 2 drives the safety pin shaft 3 to extend to the left and then insert into the safety pin hole on the top of the vulcanizer, thereby playing a locking role. At this time, the sensing plate 4 and the indicator plate 5 will move to the left at the same time as the safety pin shaft 3 and enter the locking area of ​​the safety hanger 1. When the sensing plate 4 moves to the switch plate 6 on the left, the corresponding locking detection switch 7 is triggered to issue a prompt. At the same time, the indicator plate 5 points to the locking area, and the operator can safely enter the vulcanizer to perform equipment maintenance.

[0019] 2. If Figure 2 As shown, when the main machine is ready to close the mold, the piston rod of the cylinder 2 drives the safety pin shaft 3 to retract to the right and then disengage from the safety pin hole, thereby playing a role in unlocking. At the same time, the sensor plate 4 and the indicator plate 5 will move to the right at the same time with the safety pin shaft 3 and enter the unlocking area of ​​the safety hanger 1. When the sensor plate 4 moves to the switch plate 6 on the right, it triggers the corresponding unlocking detection switch 7 to issue a prompt. At the same time, the indicator plate 5 points to the unlocking area, and the operator can safely close the mold.

Claims

1. Vulcanizing machine safety pin indicator device, characterized by: The invention comprises a safety hanger (1), a cylinder (2), a safety pin shaft (3), a sensing plate (4), an indicator plate (5), a switch plate (6), and a detection switch (7). The safety hanger (1) is fixed to the top of the upper mold of the vulcanizer, the cylinder (2) is fixed to the safety hanger (1), the piston rod of the cylinder (2) is connected to the safety pin shaft (3), the sensing plate (4) is vertically installed on the safety pin shaft (3) and moves simultaneously with the safety pin shaft (3), one end of the indicator plate (5) is connected to the sensing plate (4), and the other end is suspended in the air and points to the blank area on the side of the safety hanger (1), and two switch plates (6) are arranged side by side on the other side of the safety hanger (1), and each switch plate (6) is installed with a detection switch (7).

2. The safety pin indicator device for a vulcanizing machine according to claim 1, characterized in that: The blank area on the side of the safety hanger (1) is divided into a locking area on the left and a loosening area on the right. The two switch plates (6) on the other side of the safety hanger (1) are respectively arranged in the corresponding locking area and loosening area, wherein the detection switch (7) on the left switch plate (6) corresponds to locking, and the detection switch (7) on the right switch plate (6) corresponds to loosening.

3. The safety pin indicator device for a vulcanizing machine according to claim 2, characterized in that: The indicator plate (5) is covered with an easily identifiable marking layer.

4. The safety pin indicator device for a vulcanizing machine according to claim 2, characterized in that: The locking area and the unlocking area of ​​the safety hanger (1) are respectively covered with identification layers that are easy to identify.

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