Limiting protection device of flat plate forming vulcanizing machine

Abstract

The invention belongs to the technical field of vulcanizing machines, and particularly discloses a plate forming vulcanizing machine limiting protection device which comprises an upper mold plate and mold lifting plates, the mold lifting plates are arranged on the two sides of the upper mold plate correspondingly, two rotating shafts are arranged on the two sides of the upper mold plate correspondingly, first arc-shaped grooves corresponding to the rotating shafts are formed in the mold lifting plates, and a roller shaft is arranged at the rear end of the upper mold plate; two symmetrically-arranged rotating wheels are arranged on the roller shaft, the surfaces of the rotating wheels make rotating contact with the upper surface of the upper die plate, supporting rods are arranged at the two ends of the roller shaft, the outer sides of the supporting rods are sleeved with limiting blocks, and each limiting block is in an inverted-L shape and comprises a vertical part and a horizontal part. According to the limiting protection device for the flat plate forming vulcanizing machine, the structure is simple, the limiting device is additionally arranged above the mold lifting plate of the vulcanizing machine to limit the movement range of the upper mold plate, the upper mold plate is kept to move in a safe area, and the safety of equipment operating personnel is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of vulcanizing machines, in particular to a position limiting protection device for a flat plate forming vulcanizing machine. Background Art

[0002] Flat plate vulcanizing machine is a kind of mechanical equipment used in the production of rubber products, mainly used in the molding and vulcanization process of rubber products. This equipment is widely used in the production of rubber products such as tires, hoses, tapes, seals, etc.

[0003] The main components of the flat plate forming vulcanizer are: upper and lower templates: used to clamp and heat rubber products; hydraulic system: provides pressure to make the upper and lower diaphragms in close contact to ensure that the rubber products are evenly stressed during the vulcanization process; heating system: usually uses electric heating or steam heating to ensure that the plate reaches the required vulcanization temperature; control system: including temperature controller, pressure controller, time controller, etc., used to control various parameters of the vulcanization process; frame and support structure: used to fix and support the entire equipment to ensure its stability and safety.

[0004] The working process of the flat plate forming vulcanizer is as follows: Placing the mold: placing the mold of the rubber product between the upper and lower templates; Closing the mold: applying pressure through the hydraulic system to make the upper and lower templates in close contact and clamp the mold; Heating: starting the heating system to make the upper and lower templates reach the predetermined vulcanization temperature; Vulcanization: under a certain temperature and pressure, the rubber undergoes a chemical reaction to form a cross-linked network, thereby hardening the rubber product; Cooling: after vulcanization is completed, turn off the heating system and cool the rubber product by natural cooling or forced cooling; Opening the mold: releasing the pressure through the hydraulic system, opening the upper and lower plates, and taking out the vulcanized rubber product.

[0005] In the existing flat plate forming vulcanizer, after the product vulcanization is completed, the equipment opens the upper mold and the upper mold is lifted and opened by the lift plate. Since there is only one semicircular groove on the lift plate, the support point of the upper mold only falls in the semicircular groove of the lift plate. During operation, due to equipment failure or improper operation or excessive lifting of the ejector rod, the upper mold can easily detach from the semicircular groove and fall directly, which brings great safety risks to the production line employees. From the perspective of safe production, a limit device is proposed to solve this safety hazard. Summary of the invention

[0006] The purpose of the present invention is to provide a limit protection device for a flat plate forming vulcanizer, which has a simple structure and adds a limit device above the vulcanizer lifting template to limit the movement range of the upper template, keep it in a safe area, and ensure the safety of personnel operating the equipment.

[0007] To achieve the above-mentioned purpose, the present invention provides a limit protection device for a flat-plate forming vulcanizer, comprising an upper template and a lifting template, lift templates are provided on both sides of the upper template, two rotating shafts are provided on both sides of the upper template, an arc groove corresponding to the rotating shaft is provided on the lifting template, a roller shaft is provided at the rear end of the upper template, two symmetrically arranged rotating wheels are provided on the roller shaft, the surface of the rotating wheel is in rotational contact with the upper surface of the upper template, support rods are provided at both ends of the roller shaft, and a limit block is provided on the outer side of the support rod, and the limit block is in an inverted L shape, including a vertical portion and a horizontal portion.

[0008] Preferably, a mounting groove penetrating the horizontal portion is provided on one side of the vertical portion, and the support rod is located in the mounting groove.

[0009] Preferably, the limit block is connected to the support rod by bolts, and a plurality of bolt holes are provided on the outer surface of the vertical portion along the length direction.

[0010] Preferably, a second arc groove is provided on the lower surface of the horizontal portion, and the second arc groove is adapted to the rotating shaft.

[0011] Preferably, a group of torsion springs are respectively provided on both sides of the arc-shaped groove.

[0012] Preferably, the upper template is connected to the lifting template via a rotating shaft, a connecting rod is provided at the bottom of the lifting template, a hydraulic assembly is provided at the bottom of the connecting rod, and the bottom of the connecting rod is connected to the telescopic end of the hydraulic assembly.

[0013] Preferably, the rotating wheel is rotatably connected to the roller shaft.

[0014] The advantages and beneficial effects of the present invention using the above-mentioned flat plate forming vulcanizing machine limit protection device are:

[0015] 1. The present invention sets a roller shaft and a rotating wheel at the rear end of the upper template to play the role of pressing the upper template down, and the hydraulic assembly drives the connecting rod at the bottom of the lifting template to move upward, drives the lifting template to move upward, and drives the upper template to move upward until the upper surface of the upper template contacts the rotating wheel, and the rotating wheel contacts the upper surface of the upper template in rotation, and presses down the upper template, and the front end of the upper template tilts up. When the upper template tilts to the maximum angle, the rotating shaft at the rear end of the upper template contacts the arc groove 2 of the horizontal part of the limit block and is located in the arc groove 2. The limit block limits the upper template, and the upper template is opened. Under the action of the limit block, the rotating shaft at the rear end of the upper template is not easy to fall from the arc groove 1, thereby improving the safety of the operator.

[0016] 2. The present invention provides a torsion spring in the arc groove 2 of the limit block to play a buffering role, thereby preventing the upper template from contacting the limit block due to stress and damaging the equipment.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a limit protection device for a flat plate forming vulcanizing machine of the present invention;

[0019] Figure 2 It is a schematic diagram of opening the upper template in a limit protection device for a flat plate forming vulcanizing machine of the present invention;

[0020] Figure 3 It is a schematic diagram of a limit block in a limit protection device for a flat plate forming vulcanizing machine of the present invention;

[0021] Figure 4 It is a schematic diagram of an installation slot in a limit protection device of a flat plate forming vulcanizing machine of the present invention;

[0022] Figure 5 It is a schematic diagram of an upper template without a limit block in the prior art;

[0023] Figure 6 It is a schematic diagram of opening the template without setting a limit block in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 1. Rotating wheel; 2. Roller shaft; 3. Mounting groove; 4. Limiting block; 5. Support rod; 6. Connecting rod; 7. Rotating shaft; 8. Upper template; 9. Lifting template; 10. Arc groove 1; 11. Bolt hole; 12. Arc groove 2; 13. Horizontal part; 14. Vertical part; 15. Torsion spring. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0027] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Example 1

[0029] like Figure 1As shown, a limit protection device for a flat plate forming vulcanizer includes an upper template 8 and a lift template 9. The upper template 8 is provided with lift templates 9 on both sides, and two rotating shafts 7 are provided on both sides of the upper template 8. The lift template 9 is provided with an arc groove 10 corresponding to the rotating shaft 7. The upper template 8 is connected to the lift template 9 through the rotating shaft 7, and the rotating shaft 7 is engaged with the arc groove 10. The rotating shaft 7 can rotate in the arc groove 10. A connecting rod 6 is provided at the bottom of the lift template 9, and a hydraulic assembly (not shown in the figure) is provided at the bottom of the connecting rod 6. The bottom of the connecting rod 6 is connected to the telescopic end of the hydraulic assembly. The structure and working principle of the hydraulic assembly adopt the existing technology. The hydraulic assembly drives the connecting rod 6 to move upward, thereby driving the lift template 9 to move upward, thereby driving the upper template 8 to move upward.

[0030] like Figure 3 and Figure 4 As shown, a roller shaft 2 is provided at the rear end of the upper template 8, and two symmetrically arranged running wheels 1 are provided on the roller shaft 2, and the running wheels 1 are rotatably connected to the roller shaft 2. The surface of the running wheel 1 is in rotatable contact with the upper surface of the upper template 8, and support rods 5 are provided at both ends of the roller shaft 2. A limit block 4 is sleeved on the outer side of the support rod 5. The limit block 4 is in an inverted L shape, including a vertical portion 14 and a horizontal portion 13. The horizontal portion 13 is located above the upper template 8. A mounting groove 3 that penetrates the horizontal portion 13 is provided on one side of the vertical portion 14, and the support rod 5 is located in the mounting groove 3. The limit block 4 is connected to the support rod 5 by bolts, and a plurality of bolt holes 11 are provided on the outer surface of the vertical portion 14 along the length direction. A plurality of bolt holes 11 are also provided on the support rod 5 to match the bolt holes 11 on the limit block 4. The limit block 4 is threadedly connected to the support rod 5 through different bolt holes 11 to adjust the distance from the horizontal portion 13 to the upper template 8.

[0031] The lower surface of the horizontal portion 13 is provided with an arc groove 2 12, and the arc groove 2 12 is adapted to the rotating shaft 7. A set of torsion springs 15 are respectively provided on both sides of the arc groove 2 12.

[0032] like Figure 5 and Figure 6 As shown, the prior art does not have a limit block 4. During the opening process of the upper template 8, the rotating shaft 7 at the rear end of the upper template 8 is easy to slip out of the arc groove 10 on the lifting template 9. Without the limit block 4 for limiting, it is easy to bring safety hazards to the operator.

[0033] When in use, when the upper template 8 needs to be opened, the connecting rod 6 is moved up by the hydraulic assembly, and the upward movement of the connecting rod 6 drives the lifting template 9 to move up. The lifting template 9 moves up and drives the upper template 8 to move up under the action of the rotating shaft 7 and the arc groove 10, and moves up until the rear end of the upper template 8 contacts the rotating wheel 1. The rotating wheel 1 applies downward resistance to the rear end of the upper template 8, causing the upper template 8 to tilt up. When the upper template 8 is tilted to the maximum angle (when the rotating shaft 7 at the rear end of the upper template 8 does not separate from the arc groove 10), the lifting template moves to the highest position, is located at the maximum stroke, and is fixed. At this time, the rotating shaft 7 at the rear end of the upper template 8 contacts the arc groove 2 12 of the horizontal part 13 of the limit block 4, and is located in the arc groove 2, and the limit block limits the upper template (such as Figure 2 As shown in the figure, the torsion springs on both sides of the arc groove 2 play a buffering role while also preventing the rotating shaft of the upper template from slipping out of the arc groove 2, thereby preventing the upper template from sliding forward and backward. Under the action of the limit block 4, the rotating shaft 7 at the rear end of the upper template 8 is not easy to fall out of the arc groove 10, thereby improving the safety of the operator. By arranging the torsion spring 15 in the arc groove 2 12 of the limit block 4, a buffering role is played to prevent the upper template 8 from contacting the limit block 4 due to stress and damaging the equipment.

[0034] Therefore, the present invention adopts the above-mentioned flat plate forming vulcanizer limit protection device, which has a simple structure and adds a limit device above the vulcanizer lifting template to limit the movement range of the upper template, keep it moving within a safe area, and ensure the safety of personnel operating the equipment.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A limit protection device for a flat plate forming vulcanizing machine, comprising an upper template and a lift template, characterized in that: Lifting templates are provided on both sides of the upper template, two rotating shafts are provided on both sides of the upper template, an arc groove corresponding to the rotating shaft is provided on the lifting template, a roller shaft is provided at the rear end of the upper template, two symmetrically arranged rotating wheels are provided on the roller shaft, the surface of the rotating wheel is in rotational contact with the upper surface of the upper template, support rods are provided at both ends of the roller shaft, and a limit block is provided on the outer side of the support rod, and the limit block is in an inverted L shape, including a vertical part and a horizontal part.

2. A limit protection device for a flat plate forming vulcanizing machine according to claim 1, characterized in that: A mounting groove penetrating through the horizontal part is provided on one side of the vertical part, and the support rod is located in the mounting groove.

3. A limit protection device for a flat plate forming vulcanizing machine according to claim 1, characterized in that: The limit block is connected to the support rod by bolts, and a plurality of bolt holes are arranged on the outer surface of the vertical portion along the length direction.

4. A limit protection device for a flat plate forming vulcanizing machine according to claim 1, characterized in that: A second arc groove is provided on the lower surface of the horizontal portion, and the second arc groove is adapted to the rotating shaft.

5. A limit protection device for a flat plate forming vulcanizing machine according to claim 4, characterized in that: A group of torsion springs are respectively arranged on two sides of the arc-shaped groove.

6. A limit protection device for a flat plate forming vulcanizing machine according to claim 1, characterized in that: The upper template is connected with the lifting template through a rotating shaft. A connecting rod is arranged at the bottom of the lifting template. A hydraulic assembly is arranged at the bottom of the connecting rod. The bottom of the connecting rod is connected with the telescopic end of the hydraulic assembly.

7. A limit protection device for a flat plate forming vulcanizing machine according to claim 1, characterized in that: The rotating wheel is rotatably connected with the roller shaft.

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