Silica gel flame-retardant pad vulcanization forming equipment and preparation method

Abstract

The invention discloses silica gel flame-retardant pad vulcanization forming equipment which comprises a rack, the rack is sequentially provided with a coating mechanism, a preheating shaping mechanism, a primary vulcanization mechanism, a secondary vulcanization mechanism and a cutting mechanism in the material moving direction, the secondary vulcanization mechanism is located above the primary vulcanization mechanism, and the cutting mechanism is located above the primary vulcanization mechanism. A cooling mechanism is arranged beside the outlet of the primary vulcanization mechanism; the cooling mechanism comprises a cooling mounting frame and a cooling assembly arranged on the cooling mounting frame; the cooling assembly comprises a first cooling assembly, a second cooling assembly and a first synchronous driving assembly; the cooling mechanism is arranged beside the outlet of the primary vulcanization mechanism, so that the waste heat of the material is quickly cooled, the vulcanization reaction of the material at a non-preset temperature is avoided, and the problem that the quality of the silica gel flame-retardant pad does not reach the standard due to the performance reduction of the silica gel flame-retardant pad is solved.

Description

Technical Field

[0001] The invention relates to the technical field of silicone flame retardant pad production equipment, and in particular to silicone flame retardant pad vulcanization molding equipment and a preparation method. Background Art

[0002] Silicone flame retardant pads are a protective material used to improve battery safety. During production, liquid silicone flame retardant pad material is coated on the surface of a film, and then another film is covered on the surface of the liquid silicone flame retardant pad material. The liquid silicone flame retardant pad material sandwiched between the two films undergoes multiple steps to solidify into a silicone flame retardant pad. During the production process, the liquid silicone flame retardant pad material needs to be heat treated to achieve initial vulcanization (also known as molding vulcanization) to form the silicone flame retardant pad. To further improve the performance of the silicone flame retardant pad, the silicone flame retardant pad will be heated again for secondary vulcanization to fully vulcanize the silicone flame retardant pad.

[0003] The existing silicone flame retardant pad vulcanization molding equipment directly performs secondary vulcanization on the silicone flame retardant pad after the initial vulcanization. In the process before the secondary vulcanization of the silicone flame retardant pad, since the silicone flame retardant pad still has a certain residual temperature after the initial vulcanization, it will cause it to be incompletely vulcanized at the residual temperature. Even if the secondary vulcanization is carried out later, the product performance will still decline, resulting in the problem of substandard product quality. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a silicone flame retardant pad vulcanization molding equipment and a preparation method, which can keep the material at a preset temperature for vulcanization reaction, ensure the stable performance of the silicone flame retardant pad, and improve the quality of the silicone flame retardant pad.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A silicone flame retardant pad vulcanization molding equipment, including a frame, including a frame, the frame is provided with a coating mechanism, a preheating and shaping mechanism, a primary vulcanization mechanism, a secondary vulcanization mechanism and a cutting mechanism in sequence along the material moving direction, the secondary vulcanization mechanism is located above the primary vulcanization mechanism, and a cooling mechanism is provided beside the outlet of the primary vulcanization mechanism; the cooling mechanism includes a cooling mounting frame and a cooling assembly arranged on the cooling mounting frame; the cooling assembly includes a first cooling assembly, a second cooling assembly and a first synchronous drive assembly, the first cooling assembly and the second cooling assembly are arranged opposite to each other, a material feeding channel is formed between the first cooling assembly and the second cooling assembly, and the first cooling assembly A first lifting rod is provided at each of the four corners, and the first synchronous drive assembly drives the first cooling assembly to move closer to or away from the second cooling assembly through the first lifting rod; the first cooling assembly and the second cooling assembly both include a cooling plate and a shell, a cavity is formed between the cooling plate and the shell, the cooling plate is located on the side of the shell facing the material, the cooling plate is provided with an air outlet hole connected to the cavity, and the shell is provided with an air inlet hole connecting the cavity and an external air cooler; by arranging a cooling mechanism next to the outlet of the primary vulcanization mechanism, the residual temperature of the material is quickly cooled, avoiding the vulcanization reaction at a non-preset temperature, and solving the problem of performance degradation of the silicone flame retardant pad, resulting in substandard quality of the silicone flame retardant pad.

[0007] As a preferred solution, a groove is provided on the side of the cooling plate facing the material, the air outlet hole is located in the groove, and the extending direction of the groove is perpendicular to the moving direction of the material.

[0008] As a preferred solution, the opening of the groove gradually increases.

[0009] As a preferred solution, the shell is provided with an air guide plate located in the cavity at the air inlet hole to guide the cooling air.

[0010] As a preferred solution, the wind guide plates include first wind guide plates arranged front to back in an eight-shaped pattern; and second wind guide plates arranged left to right in an eight-shaped pattern are provided between the first wind guide plates.

[0011] As a preferred solution, the coating mechanism includes a first film unwinding assembly, a second film unwinding assembly, a support plate and a coating assembly; the first film unwinding assembly is used to unwind the first film and lay the first film on the upper surface of the support plate; the coating assembly is used to coat the material on the upper surface of the first film; the second film unwinding assembly is used to unwind the second film and cover the second film on the upper surface of the material.

[0012] As a preferred solution, the preheating and forming mechanism includes a preheating and forming mounting frame, on which a first hot pressing plate, a second hot pressing plate and a second synchronous drive assembly are provided; the first hot pressing plate and the second hot pressing plate are arranged opposite to each other, and a material feeding channel is formed between the first hot pressing plate and the second hot pressing plate, and second lifting rods are provided at the four corners of the first hot pressing plate, and the second synchronous drive assembly drives the first hot pressing plate to approach or move away from the second hot pressing plate through the second lifting rod; the temperature of the preheating and forming mechanism is 60℃-120℃.

[0013] As a preferred solution, the primary vulcanization mechanism is composed of a plurality of first ovens connected end to end, wherein the plurality of first ovens are provided with first channels for the material to pass through; the temperature of the first ovens is 150°C-200°C.

[0014] As a preferred solution, the secondary vulcanization mechanism is composed of a plurality of second ovens connected end to end, wherein the plurality of second ovens are provided with second channels for the material to pass through; the temperature of the second ovens is 120°C-150°C.

[0015] A method for preparing a silicone flame retardant pad comprises: a first film and a second film holding a material are driven by a traction mechanism to sequentially pass through a preheating and shaping mechanism, a primary vulcanization mechanism, a secondary vulcanization mechanism, and a cutting mechanism;

[0016] The temperature of the preheating setting mechanism is 60℃-120℃;

[0017] The temperature of the first oven is 150°C-200°C;

[0018] The temperature of the second oven is 120°C-150°C;

[0019] The time that the material is in the preheating and shaping mechanism is 10-32S; the time that the material is in the first oven is 140-480S; the time that the material is in the second oven is 140-480S.

[0020] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically,

[0021] 1. By setting a cooling mechanism next to the outlet of the primary vulcanization mechanism, the residual temperature of the material can be quickly cooled to avoid vulcanization reaction at non-preset temperature, thereby improving the performance and quality of the silicone flame retardant pad;

[0022] 2. By placing the primary vulcanization mechanism and the secondary vulcanization mechanism on the frame, and placing the secondary vulcanization mechanism above the primary vulcanization mechanism, the length of the vulcanization mechanism is reduced, the floor space of the vulcanization molding equipment is reduced, and installation and placement are facilitated.

[0023] In order to more clearly illustrate the structural features, technical means and specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention;

[0026] Figure 3 1 is a schematic diagram of the assembly structure of the cooling mechanism according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the internal structure of the cooling mechanism according to an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the exploded structure of a cooling assembly according to an embodiment of the present invention;

[0029] Figure 6 yes Figure 5 A schematic diagram of the structure at center A;

[0030] Figure 7 Schematic diagram of the coating mechanism structure of an embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the preheating and shaping mechanism of an embodiment of the present invention.

[0032] Description of the accompanying drawings:

[0033] 10- rack;

[0034] 20 - coating mechanism; 21 - support plate; 22 - first rotating roller; 23 - first guide roller; 24 - second rotating roller; 25 - second guide roller; 26 - first winding roller; 27 - first motor; 28 - second winding roller; 29 - second motor;

[0035] 30-preheating and shaping mechanism; 31-preheating and shaping mounting frame; 32-first hot pressing plate; 33-second hot pressing plate; 34-second synchronous drive assembly; 35-second lifting rod;

[0036] 40-primary vulcanization mechanism;

[0037] 50 - cooling mechanism; 51 - cooling mounting frame; 52 - first cooling assembly; 53 - second cooling assembly; 531 - cooling plate; 5311 - air outlet hole; 5312 - groove; 532 - housing; 5321 - air inlet hole; 5322 - first air guide plate; 5323 - second air guide plate; 533 - cavity; 54 - first synchronous drive assembly; 55 - servo motor; 551 - first linkage rod; 56 - first steering gear; 561 - second linkage rod; 57 - second steering gear; 58 - first lifting rod;

[0038] 60-secondary vulcanization mechanism;

[0039] 70-Cutting mechanism. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] like Figure 1-8 As shown, the present invention discloses a silicone flame retardant mat vulcanization molding equipment, including a frame 10. The frame 10 is provided with a coating mechanism 20, a preheating and shaping mechanism 30, a primary vulcanization mechanism 40, a secondary vulcanization mechanism 60, and a cutting mechanism 70 in sequence along the material moving direction. The secondary vulcanization mechanism 60 is located above the primary vulcanization mechanism 40. A cooling mechanism 50 is provided next to the outlet of the primary vulcanization mechanism 40. The cooling mechanism 50 includes a cooling mounting frame 51 and a cooling assembly provided on the cooling mounting frame 51.

[0043] The cooling assembly includes a first cooling assembly 52, a second cooling assembly 53 and a first synchronous drive assembly 54. The first cooling assembly 52 and the second cooling assembly 53 are arranged opposite to each other, and a material feeding channel is formed between the first cooling assembly 52 and the second cooling assembly 53. First lifting rods 58 are provided at the four corners of the first cooling assembly 52. The first synchronous drive assembly 54 drives the first cooling assembly 52 to move closer to or away from the second cooling assembly 53 through the first lifting rods 58. The first cooling assembly 52 and the second cooling assembly 53 both include a cooling plate 531 and a shell 532, a cavity 533 is formed between the cooling plate 531 and the shell 532, the cooling plate 531 is located on the side of the shell 532 facing the material, the cooling plate 531 is provided with an air outlet hole 5311 communicating with the cavity 533, and the shell 532 is provided with an air inlet hole 5321 communicating with the cavity 533 and an external air cooler; by arranging a cooling mechanism 50 beside the outlet of the primary vulcanization mechanism 40, the residual heat of the material is quickly cooled, avoiding the vulcanization reaction at a non-preset temperature, thereby solving the problem of performance degradation of the silicone flame retardant pad, resulting in the silicone flame retardant pad not meeting the quality standards.

[0044] In the present invention, the first synchronous drive component 54 includes a servo motor 55, a first diverter 56 and a second diverter 57 arranged on the cooling mounting frame 51, the servo motor 55 drives the first diverter 56 through the first linkage rod 551, the first diverter 56 drives the second diverter 57 through the second linkage rod 561, and the first lifting rod 58 is meshed with the second diverter 57; by setting the first synchronous drive component 54, the cooling component can move smoothly, which is convenient for controlling the distance between the first cooling component 52 and the second cooling component 53.

[0045] The cooling plate 531 is provided with a groove 5312 on the side facing the material, and the air outlet hole 5311 is located in the groove 5312, and the extension direction of the groove 5312 is perpendicular to the moving direction of the material; the opening of the groove 5312 gradually increases; the shell 532 is provided with an air guide plate located in the cavity 533 at the air inlet hole 5321 for guiding the cooling air; the air guide plate includes a first air guide plate 5322 arranged opposite to each other in an eight-shaped front and back shape; a second air guide plate 5323 arranged opposite to each other in an eight-shaped left and right shape is further provided between the first air guide plates 5322; by providing the groove 5312 and the first air guide plate 5322 and the second air guide plate 5323, the air blown out of the air outlet hole 5311 can be guided, and cooling can be carried out in the maximum range while ensuring the cooling effect, thereby improving the utilization rate of the cooling air.

[0046] In the present invention, the front-to-back direction is parallel to the material conveying direction, and the left-to-right direction is perpendicular to the material conveying direction.

[0047] In the present invention, the number of the first cooling components 52 is three, and the three first cooling components 52 are arranged side by side in the left-right direction, and the cavities 533 in adjacent first cooling components 52 are connected to each other through pipes; the number of the second cooling components 53 is three, and the three second cooling components 53 are arranged side by side in the left-right direction, and the cavities 533 in adjacent second cooling components 53 are connected to each other through pipes.

[0048] like Figure 7 As shown, the coating mechanism 20 includes a first film unwinding assembly, a second film unwinding assembly, a support plate 21 and a coating assembly (not shown in the figure); the first film unwinding assembly is used to unwind the first film and lay the first film on the upper surface of the support plate 21; the coating assembly is used to coat the material on the upper surface of the first film; the second film unwinding assembly is used to unwind the second film and cover the second film on the upper surface of the material; the support plate 21 is located between the first film unwinding assembly and the second film unwinding assembly, the second film unwinding assembly is located above the first film unwinding assembly, the first film unwinding assembly includes a first roller 22 and several first The guide roller 23, the first rotating roller 22 and the plurality of first guide rollers 23 are all arranged on the frame 10, and the first rotating roller 22 can be provided with a first film roll (not shown in the figure); the second film unwinding assembly includes a second rotating roller 24 and a plurality of second guide rollers 25, the second rotating roller 24 and the plurality of second guide rollers 25 are all arranged on the frame 10, and the second rotating roller 24 can be provided with a second film roll (not shown in the figure); by arranging the coating mechanism 20, the material is sandwiched between the first film and the second film. On the one hand, the first film and the second film can support the material to assist in the molding of the silicone flame retardant pad. On the other hand, the formed silicone flame retardant pad can be protected to avoid scratches.

[0049] In the present invention, the coating assembly adopts an existing coating assembly structure, and its structure is well known to those skilled in the art and will not be described in detail here.

[0050] In the present invention, the first film unwinding assembly also includes a first winding part, which includes a first winding roller 26 and a first motor 27 that drives the first winding roller 26 to rotate, and the first winding part can be used to wind up the protective film of the first film; the second film unwinding assembly also includes a second winding part, which includes a second winding roller 28 and a second motor 29 that drives the second winding roller 28 to rotate, and the second winding part can be used to wind up the protective film of the second film; by setting the first winding part and the second winding part, when using a film with a protective film on the surface, the protective film on the surface of the film can be wound up, thereby improving production efficiency.

[0051] like Figure 8As shown, the preheating and shaping mechanism 30 includes a preheating and shaping mounting frame 31, and the preheating and shaping mounting frame 31 is provided with a first hot pressing plate 32, a second hot pressing plate 33 and a second synchronous drive assembly 34; the first hot pressing plate 32 and the second hot pressing plate 33 are arranged opposite to each other, and a material feeding channel is formed between the first hot pressing plate 32 and the second hot pressing plate 33, and a second lifting rod 35 is provided at the four corners of the first hot pressing plate 32, and the second synchronous drive assembly 34 drives the first hot pressing plate 32 to move closer to or away from the second hot pressing plate 33 through the second lifting rod 35; the temperature of the preheating and shaping mechanism is 60℃-120℃, preferably 100℃; by setting the preheating and shaping mechanism 30, the silicone flame retardant pad can be pre-shaped, the shape of the silicone flame retardant pad can be controlled, and deformation after entering the primary vulcanization mechanism 40 can be avoided.

[0052] In the present invention, the structure of the second synchronous drive assembly 34 is the same as that of the first synchronous drive assembly 54 , and will not be described in detail herein.

[0053] The primary vulcanization mechanism 40 is composed of several first ovens connected end to end, and a first channel for the silicone flame retardant pad to pass through is provided in the several first ovens; the temperature of the first ovens is 150°C-200°C, preferably 180°C; the length of the primary vulcanization mechanism 40 is twenty-four meters, and the length of a single first oven is two meters, and each first oven can independently control its own temperature.

[0054] In the present invention, the cutting mechanism 70 adopts the existing cutting mechanism 70 structure, and its structure is well known to those skilled in the art and will not be described in detail here.

[0055] The secondary vulcanization mechanism 60 is composed of several second ovens connected end to end, each of which is provided with a second channel for the material to pass through; the temperature of the second ovens is 120°C-150°C, preferably 130°C; the length of the secondary vulcanization mechanism 60 is 24 meters, and the length of a single second oven is 2 meters; each second oven can independently control its own temperature.

[0056] In the present invention, the first oven and the second oven are both mature products that can be directly purchased on the market.

[0057] like Figure 1-8 As shown, a method for preparing a silicone flame retardant pad is provided, wherein a first film and a second film holding a material are driven by a traction mechanism to sequentially pass through a preheating and shaping mechanism, a primary vulcanizing mechanism, a secondary vulcanizing mechanism, and a cutting mechanism; the temperature of the preheating and shaping mechanism is 60°C-120°C, preferably 100°C;

[0058] The temperature of the first oven is 150-200°C, preferably 180°C; the temperature of the second oven is 120-150°C, preferably 130°C; the time the material is in the preheating and shaping mechanism is 10-32S; the time the material is in the first oven is 140-480S; the time the material is in the second oven is 140-480S.

[0059] The method of using the present invention is as follows: the first film on the first film unwinding assembly is pulled out and laid on the surface of the support plate 21, the material is coated on the first film on the support plate 21, and the second film on the second film unwinding assembly is covered on the raw material, so that the raw material is wrapped between the first film and the second film. The traction mechanism drives the first film and the second film holding the material to pass through the preheating mechanism, the primary vulcanization mechanism 40, the cooling mechanism 50, the secondary vulcanization mechanism 60 and the cutting mechanism 70 in sequence to complete the vulcanization and shaping of the silicone flame retardant pad.

[0060] In summary, the present invention provides a cooling mechanism 50 beside the outlet of the primary vulcanization mechanism 40 to quickly cool the residual temperature of the material and avoid vulcanization reaction at non-preset temperature, thereby improving the performance of the silicone flame retardant pad and improving the quality of the silicone flame retardant pad; by arranging the primary vulcanization mechanism 40 and the secondary vulcanization mechanism 60 on the frame 10, and arranging the secondary vulcanization mechanism 60 above the primary vulcanization mechanism 40, the length of the vulcanization mechanism is reduced, the footprint of the vulcanization molding equipment is reduced, and installation and placement are facilitated.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical practice of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A silicone flame retardant mat vulcanization molding device, comprising a frame, on which a coating mechanism, a preheating and shaping mechanism, a primary vulcanization mechanism, a secondary vulcanization mechanism, and a cutting mechanism are sequentially arranged along the material moving direction, characterized in that: The secondary vulcanization mechanism is located above the primary vulcanization mechanism, and a cooling mechanism is provided beside the outlet of the primary vulcanization mechanism; The cooling mechanism includes a cooling mounting frame and a cooling component arranged on the cooling mounting frame; the cooling component includes a first cooling component, a second cooling component and a first synchronous drive component, the first cooling component and the second cooling component are arranged opposite to each other, and a material feeding channel is formed between the first cooling component and the second cooling component, and a first lifting rod is provided at the four corners of the first cooling component, and the first synchronous drive component drives the first cooling component to approach or move away from the second cooling component through the first lifting rod; the first cooling component and the second cooling component both include a cooling plate and a shell, a cavity is formed between the cooling plate and the shell, the cooling plate is located on the side of the shell facing the material, the cooling plate is provided with an air outlet hole connected to the cavity, and the shell is provided with an air inlet hole connected to the cavity and the external air cooler.

2. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The cooling plate is provided with a groove on the side facing the material, the air outlet hole is located in the groove, and the extending direction of the groove is perpendicular to the moving direction of the material.

3. The silicone flame retardant pad vulcanization molding equipment according to claim 2, characterized in that: The opening of the groove gradually increases.

4. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The shell is provided with an air guide plate located in the cavity at the air inlet hole for guiding the cooling air.

5. The silicone flame retardant pad vulcanization molding equipment according to claim 4, characterized in that: The wind deflectors include first wind deflectors that are arranged front to back in an eight-shaped pattern; and second wind deflectors that are arranged left to right in an eight-shaped pattern are provided between the first wind deflectors.

6. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The coating mechanism includes a first film unwinding assembly, a second film unwinding assembly, a support plate and a coating assembly; The first film unwinding assembly is used to unwind the first film and lay the first film on the upper surface of the support plate; The coating assembly is used to coat the material on the upper surface of the first film; The second film unwinding assembly is used to unwind the second film and make the second film cover the upper surface of the material.

7. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The preheating and shaping mechanism includes a preheating and shaping mounting frame, on which a first hot pressing plate, a second hot pressing plate and a second synchronous drive assembly are provided; the first hot pressing plate and the second hot pressing plate are arranged opposite to each other, and a material feeding channel is formed between the first hot pressing plate and the second hot pressing plate; second lifting rods are provided at the four corners of the first hot pressing plate, and the second synchronous drive assembly drives the first hot pressing plate to approach or move away from the second hot pressing plate through the second lifting rods; the temperature of the preheating and shaping mechanism is 60℃-120℃.

8. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The primary vulcanization mechanism is composed of a plurality of first ovens connected end to end, wherein a first channel for the material to pass through is provided in the plurality of first ovens; the temperature of the first ovens is 150° C.-200° C.

9. The silicone flame retardant pad vulcanization molding equipment according to claim 1, characterized in that: The secondary vulcanization mechanism is composed of a plurality of second ovens connected end to end, wherein the plurality of second ovens are provided with second channels for the material to pass through; the temperature of the second ovens is 120° C.-150° C.

10. A method for preparing a silica gel flame retardant pad, characterized in that: The first film and the second film holding the material are driven by the traction mechanism to pass through the preheating and shaping mechanism, the primary vulcanization mechanism, the secondary vulcanization mechanism and the cutting mechanism in sequence; The temperature of the preheating setting mechanism is 60℃-120℃; The temperature of the first oven is 150°C-200°C; The temperature of the second oven is 120°C-150°C; The time that the material is in the preheating and shaping mechanism is 10-32S; the time that the material is in the first oven is 140-480S; the time that the material is in the second oven is 140-480S.

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