Preparation device and method of high-bonding-strength silica gel coated baking tray

Abstract

The application relates to a preparation device and method of a high-bonding-strength silica gel coated baking tray, which is used for coating silica gel on a baking tray with a plurality of holes on the surface and comprises a base, the upper surface of the base is provided with an inverted trapezoidal coating groove, the side wall of the coating groove close to the bottom end is provided with a receiving table, the baking tray framework is invertedly buckled on the receiving table to dip liquid silica gel, a pressurizing assembly is arranged below the coating groove to make the liquid silica gel permeate through the holes, and a multi-shaft mechanical arm is further arranged on the surface of the base. The device and method are characterized in that the holes are arranged on the surface of the baking tray framework, the liquid silica gel is filled in the holes when being coated, the inner and outer surfaces of the baking tray are formed with silica gel surfaces after solidification, the silica gel surfaces are made of stainless steel as the framework, have better heat conduction performance than pure silica gel baking trays, and the silica gel surfaces on the inner and outer sides are connected with each other through connecting sections in the holes, so that the bonding strength of the silica gel and the baking tray framework is increased.

Description

Technical Field

[0001] This invention belongs to the field of silicone baking pan technology, specifically relating to a device and method for preparing a silicone-coated baking pan with high bonding strength. Background Technology

[0002] Silicone baking pans are characterized by high temperature resistance, non-toxicity, and easy separation from food, and are commonly used in cake baking. Currently, most silicone baking pans are produced using molding or surface coating methods. Molded baking pans have the following disadvantages: to increase the load-bearing capacity of the silicone baking pan, a certain thickness is required; thicker silicone baking pans have poor thermal conductivity, leading to uneven baking. Surface coating involves coating silicone onto the outer surface of a stainless steel frame. Its disadvantages include poor adhesion between silicone and the stainless steel frame, and the stainless steel frame has less elasticity compared to a fully silicone baking pan, resulting in poor separation of food. Summary of the Invention

[0003] The purpose of this invention is to provide an apparatus and method for preparing a silicone-coated baking tray with high bonding strength in order to solve the above-mentioned problems.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] A device for preparing a high-bonding-strength silicone-coated baking pan is used to coat a baking pan with several fine pores on its surface with silicone. The device includes a base, an inverted trapezoidal coating groove on the upper surface of the base, a receiving platform on the side wall near the bottom of the coating groove, a baking pan frame placed upside down on the receiving platform and immersed in liquid silicone, a pressure assembly below the coating groove for allowing the liquid silicone to pass through the fine pores, a multi-axis robotic arm on the surface of the base, and multiple suction cups for pressing / lifting the baking pan arranged side-by-side at the ends of the multi-axis robotic arm, and a molding die for extrusion molding on the base.

[0006] During preparation, the baking tray frame is immersed in liquid silicone in the coating tank. The pressure is applied by the pressure component to allow the liquid silicone to enter the pores and form a soft silicone layer inside and outside the baking tray frame. Then, the baking tray frame with the silicone coating is moved to the molding mold by the suction cup for heating and curing.

[0007] As a further optimization of the present invention, the surface of the receiving platform is provided with a sealing gasket that contacts the edge of the baking tray, which is used to improve the sealing of the edge of the baking tray frame. When the pressure at the bottom of the baking tray frame increases, the liquid silicone has sufficient pressure to pass through the fine pores.

[0008] As a further optimization of the present invention, a positioning groove is also provided above the base. The positioning groove is used to place the molding mold. The molding mold includes a bottom mold and a top mold. The molding mold is used to accelerate the curing of liquid silicone. After adding a curing agent, the curing time of liquid silicone is relatively long. By heating and pressurizing in the molding mold, the liquid silicone can be cured more quickly.

[0009] As a further optimization of the present invention, a negative pressure box is provided at the end of the multi-axis robotic arm. The negative pressure box is evacuated / inflated by a bidirectional vacuum pump. A rigid hollow tube is provided at the bottom of the negative pressure box. The suction cup is connected to the bottom of the hollow tube. The suction and release of the suction cup are controlled by the negative pressure box and the bidirectional vacuum pump. The hollow tube is made of a rigid material, so that the hollow tube has the ability to press down on the baking tray frame. Its downward pressing and upward movement are both driven by the multi-axis robotic arm.

[0010] As a further optimization of the present invention, the middle section of the hollow tube is provided with a buffer cavity to prevent the backflow of liquid silicone. When the suction cup picks up the baking tray frame, it will suck up some liquid silicone. In order to prevent the liquid silicone from entering the negative pressure box, a buffer cavity is provided for storage and to facilitate the discharge of the remaining liquid silicone.

[0011] As a further optimization of the present invention, the outline of the receiving platform is adapted to the edge of the baking tray frame, so as to make the suction cup and the fine holes on the surface of the baking tray frame misalign with each other. The receiving platform enables the baking tray frame to be positioned, which facilitates the misalignment of the suction cup and the fine holes on the surface of the baking tray frame.

[0012] As a further optimization of the present invention, the pressurizing component includes a bottom groove disposed below the coating tank, and a pressurizing piston driven by a cylinder is disposed in the bottom groove.

[0013] To implement the above-mentioned device, the present invention also proposes a method for preparing a high-bonding-strength silicone-coated baking tray, comprising the following steps:

[0014] S1: Drill several fine holes on the surface of stainless steel material, and press the stainless steel material with fine holes into the shape of a baking tray to form the baking tray skeleton;

[0015] S2: Add liquid silicone to the coating tank, and place the baking tray frame upside down on the receiving platform surface, immersing it in the liquid silicone. The multi-axis robotic arm drives the suction cup to press down on the baking tray frame, and the cylinder drives the pressure piston to move upward, increasing the pressure of the liquid silicone under the baking tray frame. This causes the liquid silicone to pass through the pores, expelling the air inside the pores, and filling the pores with liquid silicone. The liquid silicone then adheres to the inner and outer surfaces of the baking tray frame, forming a baking tray mold blank.

[0016] S3: The baking tray blank is lifted from the coating tank by a suction cup, placed into the molding mold for extrusion, and cured under heating and pressure.

[0017] As a further optimization of the present invention, step S, the step of stamping the stainless steel material with fine holes into the shape of a baking pan, specifically involves: using the middle part of the stainless steel material with fine holes as the base plate of the baking pan skeleton, and stamping outward-facing annular grooves around the base plate; opening and separating the stainless steel material on the outer side of the base plate, and further bending the edges to form side plates; the side plates are in close contact with each other, and the structure of the side plates being separated from each other allows the baking pan to bend slightly elastically, making it easy for the food to separate from the baking pan.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention creates fine holes on the surface of a baking pan frame and applies pressure to fill the fine holes with liquid silicone during coating. After curing, a silicone surface is formed on the inner and outer surfaces of the baking pan. Since the silicone surface uses stainless steel as a frame, it has better thermal conductivity than a pure silicone baking pan. Furthermore, the inner and outer silicone surfaces are connected to each other through connecting sections in the fine holes, which increases the bonding strength between the silicone and the baking pan frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the preparation apparatus of the present invention;

[0021] Figure 2 This is a schematic diagram of the negative pressure component of the present invention;

[0022] Figure 3 This is the invention Figure 1 Enlarged view of the structure of section A in the middle;

[0023] Figure 4 This is a schematic diagram of the baking pan prepared by the method of the present invention;

[0024] Figure 5 This is a structural diagram of the silicone baking pan obtained by the method of the present invention;

[0025] In the diagram: 1. Base; 101. Coating tank; 102. Receiving platform; 103. Sealing gasket; 104. Bottom groove; 105. Positioning groove; 2. Cylinder; 201. Pressurizing piston; 3. Multi-axis robotic arm; 4. Negative pressure assembly; 41. Negative pressure box; 42. Two-way vacuum pump; 43. Hollow tube; 44. Suction cup; 45. Buffer chamber; 5. Molding mold; 501. Bottom mold; 502. Cover mold; 6. Baking tray frame; 601. Base plate; 602. Groove; 603. Side plate; 604. Fine hole; 605. Silicone surface; 606. Connecting section. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Example 1

[0028] like Figure 1-3 As shown, an apparatus for preparing a high-bonding-strength silicone-coated baking pan is used to coat a baking pan frame 6 with a plurality of fine pores 604 on its surface with silicone. The apparatus includes a base 1, with an inverted trapezoidal coating groove 101 on the upper surface of the base 1. A receiving platform 102 is provided on the side wall of the coating groove 101 near its bottom end. The baking pan frame 6 is inverted and rests on the receiving platform 102. A bottom groove 104 is provided below the coating groove 101, and a pressurizing assembly is provided within the bottom groove 104. The pressurizing assembly includes a pressurizing piston 201 driven by a cylinder 2. The surface of the base 1 is also provided with… There is a multi-axis robotic arm 3, and a negative pressure component 4 is provided at the end of the multi-axis robotic arm 3. The negative pressure component 4 includes a negative pressure box 41. The negative pressure box 41 is evacuated / inflated by a bidirectional vacuum pump 42. A rigid hollow tube 43 is provided at the bottom of the negative pressure box 41. A suction cup 44 is connected to the bottom of the hollow tube 43. The suction and release of the suction cup 44 are controlled by the negative pressure box 41 and the bidirectional vacuum pump 42. The hollow tube 43 is made of rigid material, so that the hollow tube 43 has the ability to press down on the baking tray frame 6. Its downward pressing and upward movement are both driven by the multi-axis robotic arm 3.

[0029] During preparation, the baking tray frame 6 is immersed in the liquid silicone in the coating tank 101. The pressure is applied by the pressure component so that the liquid silicone enters the fine pores 604 and forms a soft silicone layer inside and outside the baking tray frame 6. Then, the baking tray frame 6 with the silicone coating layer is moved to the molding mold 5 by the suction cup 44 for heating and curing.

[0030] The surface of the receiving platform 102 is provided with a sealing gasket 103 that contacts the edge of the baking tray frame 6. When the pressure at the bottom of the baking tray frame 6 increases, the liquid silicone has sufficient pressure to pass through the fine holes 604.

[0031] A positioning groove 105 is also provided above the base 1. The positioning groove 105 is used to place the molding mold 5. The molding mold 5 includes a bottom mold 501 and a cover mold 502. The molding mold 5 is used to accelerate the curing of liquid silicone. After adding curing agent, the curing time of liquid silicone is relatively long. By heating and pressurizing in the molding mold 5, the liquid silicone can be cured faster.

[0032] The middle section of the hollow tube 43 is provided with a buffer chamber 45 to prevent the backflow of liquid silicone. When the suction cup 44 picks up the baking tray frame 6, it will pick up some liquid silicone. In order to prevent the liquid silicone from entering the negative pressure box 41, a buffer chamber 45 is provided for storage and to facilitate the discharge of the remaining liquid silicone.

[0033] The contour of the receiving platform 102 is adapted to the edge of the baking tray frame 6, so as to make the suction cup 44 and the fine holes 604 on the surface of the baking tray frame 6 misaligned. The receiving platform 102 positions the baking tray frame 6, making it easier to misalign the suction cup 44 and the fine holes 604 on the surface of the baking tray frame 6, so as to make it easier to pick up the baking tray frame 6.

[0034] To implement the above-mentioned device, the present invention also proposes a method for preparing a high-bonding-strength silicone-coated baking tray, comprising the following steps:

[0035] S1: Drill several fine holes 604 on the surface of the stainless steel material, and press the stainless steel material with fine holes 604 into the shape of a baking tray to form the baking tray skeleton 6.

[0036] S2: Add liquid silicone to the coating tank 101, and place the baking tray frame 6 upside down on the surface of the receiving platform 102, immersing it in the liquid silicone. The multi-axis robotic arm 3 drives the suction cup 44 to press down the baking tray frame 6, and the cylinder 2 drives the pressure piston 201 to move upward, increasing the pressure of the liquid silicone under the baking tray frame 6. This allows the liquid silicone to pass through the fine holes 604, expelling the air inside the fine holes 604, and filling the fine holes 604 with liquid silicone. The liquid silicone then adheres to the inner and outer surfaces of the baking tray frame, forming a baking tray mold blank.

[0037] S3: The baking tray blank is lifted from the coating tank 101 by the suction cup 44. When the suction cup 44 lifts the baking tray frame 6, the liquid silicone on the surface of the baking tray frame 6 may be sucked in. Therefore, a buffer cavity 45 is set in the hollow tube 43. Then the baking tray frame 6 is placed into the molding mold 5 and extruded. The area above the baking tray frame 6 that is attracted by the suction cup 4 lacks liquid silicone, but after being extruded by the molding mold 5, the liquid silicone is evenly distributed and accelerated under heating and pressure conditions.

[0038] like Figure 4-5 As shown, after curing, silicone surfaces 605 are formed on the inner and outer surfaces of the baking tray frame 6. The inner and outer silicone surfaces 605 are connected to each other through the connecting segments 606 in the fine holes 604, which increases the bonding strength between the silicone and the baking tray frame.

[0039] In step S1, the step of stamping the stainless steel material with fine holes into the shape of a baking pan specifically involves: using the middle part of the stainless steel material with fine holes 604 as the base plate 601 of the baking pan frame, and stamping outward-facing annular grooves 602 around the base plate 601. The outer stainless steel material of the base plate 601 is separated by seams, and the edges are further bent to form side plates 603. The side plates 603 are in close contact with each other. The structure of the side plates being separated allows the baking pan frame 6 to bend slightly elastically, making it easy for food to separate from the baking pan frame 6. The stamped grooves 602 form a barrier above the base plate 601, such as... Figure 4As shown, the inner side of the enclosure stores some liquid silicone to fill the blank area sucked out by the suction cup 44. After entering the molding mold 5, the liquid silicone is evenly distributed on each surface after being squeezed.

[0040] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A device for preparing a high-bonding-strength silicone-coated baking pan, used to coat a baking pan skeleton (6) with a plurality of fine pores (604) on its surface with silicone, including a base (1), characterized in that: The upper surface of the base (1) is provided with an inverted trapezoidal coating tank (101), and a receiving platform (102) is provided on the side wall of the coating tank (101) near the bottom. The baking tray frame (6) is inverted on the receiving platform (102) and immersed in liquid silicone. A pressure component is provided below the coating tank (101) to allow the liquid silicone to pass through the fine holes (604). A multi-axis robotic arm (3) is also provided on the surface of the base (1). Multiple suction cups (44) for pressing down / lifting the baking tray frame (6) are arranged side by side at the end of the multi-axis robotic arm (3). A molding die (5) for extrusion molding is also provided on the base (1). During preparation, the baking tray frame (6) is immersed in the liquid silicone in the coating tank (101), and the pressure is applied by the pressure component so that the liquid silicone enters the fine pores (604) and forms a soft silicone layer inside and outside the baking tray frame (6). Then, the baking tray frame (6) with the silicone coating layer is moved to the molding mold (5) by the suction cup (44) for heating and curing. The surface of the receiving platform (102) is provided with a sealing gasket (103) that contacts the edge of the baking tray frame (6). The pressurizing assembly includes a bottom groove (104) disposed below the coating tank (101), and a pressurizing piston (201) driven by a cylinder (2) is disposed in the bottom groove (104).

2. The apparatus for preparing a high-bonding-strength silicone-coated baking tray according to claim 1, characterized in that: A positioning groove (105) is also provided above the base (1). The positioning groove (105) is used to place the forming mold (5). The forming mold (5) includes a bottom mold (501) and a cover mold (502).

3. The apparatus for preparing a high-bonding-strength silicone-coated baking tray according to claim 1, characterized in that: The end of the multi-axis robotic arm (3) is provided with a negative pressure box (41), which is pumped / filled by a bidirectional vacuum pump (42). A rigid hollow tube (43) is provided at the bottom of the negative pressure box (41), and the suction cup (44) is connected to the bottom of the hollow tube (43).

4. The apparatus for preparing a high-bonding-strength silicone-coated baking tray according to claim 3, characterized in that: The hollow tube (43) is provided with a buffer cavity (45) in the middle section to prevent the backflow of liquid silicone.

5. The apparatus and method for preparing a high-bonding-strength silicone-coated baking tray according to claim 3, characterized in that: The outline of the receiving platform (102) is adapted to the edge of the baking tray frame (6) to make the suction cup (44) and the fine holes (604) on the surface of the baking tray frame (6) misaligned.

6. A method for preparing a baking tray based on the preparation apparatus according to any one of claims 1-5, characterized in that: Includes the following steps: S1: Drill several fine holes (604) on the surface of the stainless steel material, and press the stainless steel material with fine holes (604) into the shape of a baking tray to form a baking tray skeleton (6). S2: Add liquid silicone to the coating tank (101) and place the baking tray frame (6) upside down on the surface of the receiving platform (102) and immerse it in the liquid silicone. The multi-axis robotic arm (3) drives the suction cup (44) to press down the baking tray frame (6), and the cylinder (2) drives the pressure piston (201) to move upward, increasing the pressure of the liquid silicone under the baking tray frame (6), so that the liquid silicone passes through the fine hole (604), expelling the air inside the fine hole (604), so that the liquid silicone fills the fine hole (604), and the liquid silicone adheres to the inner and outer surfaces of the baking tray frame (6) to form a baking tray mold blank. S3: The baking tray blank is lifted from the coating tank (101) by the suction cup (44), placed into the molding mold for extrusion molding, and cured under heating and pressure conditions.

7. The method for preparing a high-bonding-strength silicone-coated baking tray according to claim 6, characterized in that: In step S1, the step of stamping the stainless steel material with fine holes to form the shape of the baking tray frame (6) is as follows: the middle part of the stainless steel material with fine holes (604) is used as the bottom plate (601) of the baking tray frame (6), and an annular outward protrusion (602) is stamped around the bottom plate (601). The stainless steel material on the outside of the bottom plate (601) is separated by opening and slit, and the edge is further bent to form a side plate (603). The side plates (603) are in close contact with each other.

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