Working platform mechanism of hot pressing equipment

Abstract

The invention discloses a working platform mechanism of hot pressing equipment, which is provided with a working table, a first heating plate is arranged at the bottom of the working table, and the working platform mechanism is characterized in that a heating device is arranged at the top of the working table and can heat the top of the working table; and the required temperature difference is kept between the top of the workbench and the bottom of the workbench, so that the bottom of the workbench is subjected to required convex deformation. According to the structure, convex deformation of the bottom of the workbench can be achieved by adjusting the temperature difference between the top and the bottom of the workbench, and then a better gold stamping effect is obtained.

Description

Technical Field

[0001] The invention relates to the field of hot pressing equipment, in particular to a working platform mechanism of hot pressing equipment. Background Art

[0002] There are many types of hot pressing equipment, such as cast film equipment, hot press machine mechanical equipment, hot pressing forming machine, hot stamping equipment on die cutting, embossing equipment, etc., all of which are formed by hot pressing materials or pressurizing metal foil and other materials onto printed products by applying pressure at high temperature, so that the pattern has a bright and shiny texture. Especially hot stamping equipment, the current hot stamping equipment uses a moving platform and a fixed platform to achieve hot stamping. Generally speaking, the moving platform is at the bottom, the fixed platform is at the top, and a heating plate is installed at the bottom of the fixed platform. The structure of the workbench of other hot pressing equipment is basically the same. For the needs of hot pressing, this workbench only installs a heating plate at the bottom of the workbench. However, the volume of the workbench is large. Just because of heating at the bottom of the workbench, the temperature difference of various parts of the entire workbench will cause deformation, that is, the outer area of ​​the workbench will be slightly warped upward, resulting in the unevenness of the entire workbench, affecting the quality of its hot pressed products. As for the hot stamping equipment, when the temperature of the heating plate is set at 110 degrees Celsius, the deformation of the middle of the workbench reaches 0.325 mm. Under normal circumstances, it is not best to keep the two contact surfaces of the hot stamping workbench completely flat. Instead, a suitable pad should be placed in the hot stamping area to achieve a better hot stamping or creasing effect. Therefore, in actual production, in order to ensure the quality of hot stamping or creasing, it is usually necessary to place a base plate of appropriate thickness on the top of the moving platform to achieve hot stamping or creasing of paper, so as to better cooperate with the aluminum foil and the fixed platform for hot stamping or creasing. When the specifications, materials and composition of the paper and the aluminum foil change, it is necessary to replace the pad of the required thickness, which is very troublesome. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a working platform mechanism of a hot pressing equipment capable of controllably adjusting the deformation amount of the working table.

[0004] To this end, the present invention is implemented by adopting the following technical scheme: a hot pressing equipment working platform mechanism, comprising a workbench, a first heating plate is installed at the bottom of the workbench, and the characteristic is that a heating device is provided at the top of the workbench, and the heating device can heat the top of the workbench so that the top and the bottom of the workbench maintain a required temperature difference, thereby causing the bottom of the workbench to undergo the required convex deformation. The heating temperature Y of the workbench by the heating device is obtained according to the formula Y=C-b(a+X), wherein C is the heating temperature of the first heating plate, a is the basic deformation amount that can be set at the factory, b is the deformation ratio of the workbench, and X is the required deformation compensation amount manually input.

[0005] The deformation ratio b of the workbench varies according to the material and thickness of the workbench.

[0006] The heating device comprises a second heating plate arranged on the top of the workbench, a temperature sensor is arranged at the lower part of the workbench, and the temperature sensor is connected to the second heating plate through a temperature controller.

[0007] The heating device is an electromagnetic heating plate arranged on the top of the workbench. A temperature sensor is arranged at the bottom of the workbench. The temperature sensor is connected to the electromagnetic heating plate through a temperature controller.

[0008] The heating device is a through hole on the top of the workbench, and a mold temperature controller is arranged on the periphery of the workbench. The mold temperature controller heats the medium and inputs it into the through hole. The workbench is provided with a temperature sensor, and the temperature sensor is connected to the top of the workbench through the mold temperature controller.

[0009] By adopting the above technical scheme, since a heating device is arranged on the top of the workbench, the top of the workbench can also be heated during hot pressing, so that the top and bottom of the workbench maintain the required temperature difference, so that the bottom of the workbench will undergo a certain outward convex deformation, and the amount of the outward convex deformation will change according to the change in the temperature difference. At the same time, the outward convex deformation of the bottom of the workbench can replace the original structure of setting a bottom plate on the top of the moving platform, and the heating temperature of the top of the workbench by the heating device can be controlled according to changes in paper thickness, specifications, and aluminum foil composition, and the temperature difference between the top and bottom of the workbench can be adjusted to obtain the required outward convex deformation, ensuring that the working surfaces of the upper and lower workbenches can tightly and closely press the paper and the aluminum foil together, and then the metal on the gold aluminum foil is transferred to the paper, thereby further improving the quality of its hot pressing processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of a heating plate structure used in the heating device of the present invention; Figure 2 A schematic diagram of a heating device of the present invention using an electromagnetic heating plate; Figure 3 A schematic diagram of a heating device of the present invention using a mold temperature controller; Figure 4 This is a schematic diagram of the deformation ratio of a workbench with a cast iron material thickness of 70 cm according to the present invention.

[0011] Among them: 1. workbench; 2. first heating plate; 3. second heating plate; 4. electromagnetic heating plate; 5. temperature sensor; 6. mold temperature controller; 7. heat pipe; 8. perforation. DETAILED DESCRIPTION

[0012] Embodiment 1: The present invention discloses a working platform mechanism of a hot pressing equipment, comprising a workbench 1, a first heating plate 2 is installed at the bottom of the workbench 1, and a heating device is provided at the top of the workbench 1. The heating device can heat the top of the workbench 1 so that the top of the workbench 1 and the bottom of the workbench 1 maintain a required temperature difference, thereby causing the bottom of the workbench 1 to undergo the required convex deformation. Specifically, the heating device includes a second heating plate 3 arranged on the top of the workbench 1, and a temperature sensor 5 is provided at the lower part of the workbench 1. The temperature sensor 5 is connected to the second heating plate 3 through a temperature controller. The second heating plate 3 can be a structure in which a heating wire is arranged. When working, the first heating plate 2 generates heat, causing the temperature of the bottom position of the workbench 1 to rise. At this time, the temperature sensor 5 will sense the temperature of the bottom of the workbench 1 and feed it back to the temperature controller. The temperature controller will control the second heating plate 3 to heat, so that the second heating plate 3 heats the top of the workbench 1, so that the required temperature difference is maintained between the top and the bottom of the workbench 1. At this time, the bottom of the workbench 1 undergoes the required convex deformation. This convex deformation can replace the structure of setting a bottom plate on the moving platform, and according to the changes in the thickness, material, aluminum foil composition, etc. of the paper, the heating device can be directly controlled to heat the top of the workbench to the required temperature, change the temperature difference between the top and the bottom of the workbench, and then change the convex deformation of the bottom of the workbench 1. The formula obtained through experiments is: Y=C-b(a+X) Where Y is the temperature at which the top of the workbench is heated by the heating device, C is the heating temperature at the bottom of the first heating plate 2, a is the basic deformation that can be set at the factory, this basic deformation is obtained based on practical experience, and is set to 0.1mm at the factory for the convenience of some users. Of course, the basic deformation can also be omitted, that is, the basic deformation is 0, and the bottom of the workbench is deformed directly by changing the temperature difference between the first heating plate and the top, b is the deformation ratio of the workbench, and the deformation ratio varies according to the material and thickness of the workbench. Generally speaking, these workbenches are made of cast iron with a thickness of about 50 cm. The deformation ratio is measured to be 306.5, and X is the deformation compensation amount input manually. For example: If a cast iron workbench with a thickness of 50 cm is used, when the heating temperature of the first heating plate 2 is 110 degrees Celsius, the basic deformation is 0.1mm, and the required deformation compensation is 0.15mm, the heating device heats the top of the workbench 1 to a temperature of Y=C-b(a+X)=110-306.5*(0.1+0.15)=33.375 degrees Celsius, that is, the temperature of the workbench is heated to 33.375 set degrees, so that the deformation of the bottom of the workbench 1 can reach a+X=0.25mm. If the basic deformation is 0, the X value is 0.25mm. This heating method only requires computer programming, when the program is running, to enter the deformation compensation on the running interface, or directly enter the total deformation, to achieve the purpose of temperature control. In the present invention, the deformation ratio is obtained by: after heating the bottom of the workbench, the ratio of the bottom heating temperature of the workbench to the protrusion of the center position of the workbench. Usually, at room temperature, the protrusion of the workbench is set to 0. As the bottom heating temperature increases, the protrusion of the center position of the workbench will also increase linearly. Figure 4 This is the deformation ratio diagram for measuring a 50 cm thick workbench of cast iron material.

[0013] Embodiment 2: The difference between this embodiment and embodiment 1 is that the heating device is different. Specifically, the heating device is an electromagnetic heating plate 4 arranged on the top of the workbench 1. A temperature sensor 5 is arranged at the bottom of the workbench 1. The temperature sensor 5 is connected to the electromagnetic heating plate 4 through a temperature controller. When working, the first heating plate 2 generates heat, causing the bottom of the workbench 1 to heat up. The temperature sensor 5 transmits the detected temperature information to the temperature controller. The electromagnetic heating plate 4 controls the temperature of the top of the workbench according to the data of the temperature sensor and the input compensation amount X. The temperature control method is the same as that of embodiment 1, and both are controlled by computer programming programs and the deformation compensation amount is input.

[0014] Embodiment 3: In this embodiment, a through hole is also provided on the top of the workbench 1, and a mold temperature controller 6 is arranged on the periphery of the workbench 1. The mold temperature controller 6 heats the medium and inputs it into the through hole 8 on the top of the workbench 1 through the heat pipe 7 for circulation. A temperature sensor 5 is provided at the bottom of the workbench 1, and the temperature sensor 5 is connected to the top of the workbench through the mold temperature controller 6. That is, the temperature sensor 5 detects the temperature signal at the bottom of the workbench and sends it to the mold temperature controller 6. The mold temperature controller 6 controls the temperature at the top of the workbench according to the data of the temperature sensor and the input compensation amount X. The temperature control method is the same as that of the embodiment 1.

[0015] The working platform mechanism of the hot pressing equipment of the present invention has a heating device arranged on the top of the workbench. When hot pressing is performed, the top of the workbench can also be heated, so that the top and bottom of the workbench maintain the required temperature difference, so that the bottom of the workbench will undergo a certain convex deformation, and the amount of convex deformation will change according to the change in the temperature difference. At the same time, the convex deformation of the bottom of the workbench can replace the structure of the base plate originally arranged on the top of the moving platform, and the heating amount of the heating device can be controlled according to changes in paper thickness, specifications, and hot stamping amount, and the temperature difference between the top and bottom of the workbench can be adjusted to obtain the required convex deformation, thereby ensuring that the working surfaces of the upper and lower workbenches can tightly and closely press the paper and the aluminum foil together, effectively transfer the metal on the aluminum foil to the paper, and further improve the quality of its hot pressing processing.

Claims

1. A hot pressing equipment working platform mechanism, comprising a working platform (1), a first heating plate (2) being arranged at the bottom of the working platform (1), characterized in that A heating device is provided on the top of the workbench (1), and the heating device can heat the top of the workbench (1) so that the top of the workbench (1) and the bottom of the workbench (1) maintain a desired temperature difference, thereby causing the bottom of the workbench (1) to undergo a desired convex deformation. The heating temperature Y of the top of the workbench (1) by the heating device is obtained according to the formula Y=C-b(a+X), wherein C is the heating temperature of the first heating plate (2), a is the basic deformation amount that can be set at the factory, b is the deformation ratio of the workbench, and X is the required deformation compensation amount manually input.

2. The hot pressing equipment working platform mechanism according to claim 1 is characterized in that The deformation ratio b of the workbench changes according to the material and thickness of the workbench.

3. The hot pressing equipment working platform mechanism according to claim 1 is characterized in that The heating device comprises a second heating plate (3) arranged on the top of the workbench (1), and a temperature sensor (5) is provided at the bottom of the workbench (1), wherein the temperature sensor (5) is connected to the second heating plate (3) via a temperature controller.

4. The hot pressing equipment working platform mechanism according to claim 1 is characterized in that The heating device is an electromagnetic heating plate (4) arranged on the top of the workbench (1), and a temperature sensor (5) is arranged at the bottom of the workbench (1). The temperature sensor (5) is connected to the electromagnetic heating plate (4) via a temperature controller.

5. The hot pressing equipment working platform mechanism according to claim 1 is characterized in that The heating device is a through hole (8) formed on the top of the workbench (1), a mold temperature controller (6) is arranged on the periphery of the workbench, and the mold temperature controller (6) heats the medium and inputs it into the through hole (8). A temperature sensor (5) is provided at the bottom of the workbench (1), and the temperature sensor (5) is connected to the top of the workbench through the mold temperature controller (6).

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