Hot-pressing bulging equipment for printed matter

Abstract

The utility model discloses hot-pressing bulging equipment for printed matters. Relates to the technical field of post-processing of printed matters. The post-processing device comprises a rack, an upper die and a lower die which are oppositely arranged on the rack, a driving mechanism which is connected to the upper die and drives the upper die to move up and down, and a pressure adjusting device which is connected to the upper die and is used for adjusting the pressure of the upper die to the lower die; the upper mold sequentially comprises an upper mold heating plate and an upper mold plate from top to bottom, the lower mold sequentially comprises a lower mold heating plate and a lower mold plate from bottom to top, an upper groove is formed along the lower end face of the upper mold plate, an upper mold block is detachably connected in the upper groove, a lower groove is formed along the upper end face of the lower mold plate, and a lower mold block is detachably connected in the lower groove. A lower die block is detachably connected in the lower groove, the upper die block and the lower die block are in butt joint and matched to form a cavity, and the matched end faces of the upper die block and the lower die block are arc-shaped; and in the hot-pressing bulging process, the shape of the product can be more accurately molded.

Description

Technical Field

[0001] The utility model relates to the technical field of post-processing of printed products, in particular to a hot pressing and bulging device for printed products. Background Art

[0002] In today's printing industry, as consumers' demands for higher quality and more personalized prints continue to rise, printed products are no longer limited to simple flat graphic displays. To enhance the visual impact, tactility, and functionality of printed products, various specialized processing techniques have emerged. Among them, hot-pressing embossing is increasingly gaining importance in post-processing of printed products, imparting a unique three-dimensional effect that makes them more attractive and competitive.

[0003] Membrane switch faceplates, widely used in printed materials for electronics, instrumentation, and other fields, must not only clearly and accurately present various graphic information, such as button labels and indicator signs, but also often require a certain three-dimensional shape to enhance the user experience and the overall aesthetics of the product. For example, on the control panels of some high-end electronic products, the curved design of the membrane switch faceplates allows them to better fit finger operation habits, while also enhancing the product's sense of technology and fashion. However, traditional printing processes and equipment often struggle to meet the membrane switch faceplate's requirements for three-dimensional shape and high-precision processing.

[0004] Existing hot-press embossing equipment features a relatively fixed mold structure, with the upper and lower molds typically being a single piece. While this performs the basic embossing function, the need for frequent replacement of the entire mold for printed products like membrane switch stickers with varying shapes and sizes not only increases equipment downtime and production costs, but also reduces efficiency. Furthermore, the single-piece mold presents significant processing challenges when processing complex shapes or special curved surfaces, making it difficult to precisely achieve the desired three-dimensional effect.

[0005] In summary, in order to meet the growing demand for hot pressing and bulging technology for printed products such as membrane switch stickers in the printing industry, especially for the processing requirements of special shapes such as arcs, it is urgent to develop a new type of hot pressing and bulging equipment. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] A hot pressing and embossing device for printed materials, comprising a frame, an upper mold and a lower mold located on the frame and arranged opposite to each other, a driving mechanism connected to the upper mold and driving it to move up and down, and a pressure regulating device connected to the upper mold and used to regulate the pressure of the upper mold on the lower mold;

[0008] The upper mold includes an upper mold heating plate and an upper mold plate from top to bottom, and the lower mold includes a lower mold heating plate and a lower mold plate from bottom to top. An upper groove is provided along the lower end surface of the upper mold plate, and an upper module is detachably connected to the upper groove. A lower groove is provided along the upper end surface of the lower mold plate, and a lower module is detachably connected to the lower groove. The upper module and the lower module are docked and matched to form a cavity, and the mating end surfaces of the upper module and the lower module are both arc-shaped.

[0009] As a further solution of the present invention: first connecting blocks are respectively extended outward on both sides of the upper module, a first groove running through the first connecting block is opened along the lower end surface of the first connecting block, and the upper mold heating plate is provided with a first threaded hole that matches the first groove.

[0010] As a further solution of the present invention: second connecting blocks are respectively extended outward on both sides of the lower module, a second groove running through the second connecting block is opened along the upper end surface of the second connecting block, and the lower mold heating plate is provided with a second threaded hole that matches the second groove.

[0011] As a further solution of the present invention: first guide columns are convexly provided on the first connecting block and on both sides of the first groove, and first guide grooves are concavely provided on the second connecting block and on both sides of the second groove, and the first guide columns and the first guide grooves are docked and matched.

[0012] As a further solution of the present invention: a second guide column is convexly provided on the upper template and located on the circumference of the upper groove, and a second guide groove is concavely provided on the lower template and located on the circumference of the lower groove, and the second guide column is docked with the second guide groove.

[0013] As a further solution of the present invention: the pressure regulating device includes a pressure sensor and a pneumatic pressure regulating mechanism, the pressure sensor is used to detect the pressure applied by the upper mold, and the pneumatic pressure regulating mechanism adjusts the pressure of the upper mold according to the detection data of the pressure sensor.

[0014] As a further solution of the present invention: a accommodating cavity corresponding to the upper mold and the lower mold is provided in the frame, and a bottom plate is extended from the frame toward the opening direction of the accommodating cavity, and a slide rail is provided on the upper end surface of the bottom plate, and the lower end surface of the lower mold heating plate is slidably connected to the slide rail through a slider, and a power device is installed on the lower end surface of the bottom plate, and the output end of the power device is connected to a linear module, and the movable end of the linear module is connected to the lower mold heating plate through the bottom plate through a connecting piece, wherein a slide groove is provided along the upper end surface of the bottom plate, which passes through itself and corresponds to the connecting piece.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1) Due to structural limitations, monolithic molds struggle to accurately achieve the desired three-dimensional effect when faced with complex shapes or special arc requirements. However, the arc surface modules (upper and lower modules) in this design perfectly match the arc design of the membrane switch faceplate. During the hot pressing and bulging process, they can more accurately shape the product. For example, the membrane switch faceplates on the control panels of some high-end electronic products have very high requirements for arc precision. The arc module ensures that the arc of each product meets the same high-precision standard, thereby improving product quality and consistency and reducing the scrap rate caused by shape errors.

[0017] 2) In traditional hot pressing and bulging equipment, the mold is usually an integral design. When it is necessary to process membrane switch face stickers of different shapes and sizes, replacing the entire mold is a tedious and time-consuming task. For example, replacing an integral mold may take half an hour or even longer. During this period, the equipment needs to be shut down, resulting in production interruption. After adopting the detachable modular structure of this design, it is only necessary to replace the corresponding module for different product requirements. Generally, replacing a module may only take a few minutes. Compared with replacing the entire mold, the downtime of the equipment is greatly shortened, thereby significantly improving the actual operation time and production efficiency of the equipment.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a structural diagram of the utility model from one perspective;

[0021] Figure 2 This is a structural diagram of the utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the structure of the power device, linear module, connector, slide rail and lower mold heating plate of the utility model;

[0023] Figure 4 It is a structural diagram of the upper mold of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the lower mold of the utility model.

[0025] The reference numerals and names in the figures are as follows:

[0026] 1. Frame; 2. Upper mold; 3. Lower mold; 4. Driving mechanism; 5. Upper mold heating plate; 6. Upper mold plate; 7. Lower mold heating plate; 8. Lower mold plate; 9. Upper module; 10. Lower module; 11. First connecting block; 12. First groove; 13. Second connecting block; 14. Second groove; 15. First guide column; 16. First guide groove; 17. Second guide column; 18. Second guide groove; 19. Accommodating cavity; 20. Bottom plate; 21. Slide rail; 22. Power unit; 23. Linear module; 24. Connector; 25. Slide groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-5 In an embodiment of the present invention, a hot pressing and bulging device for printed materials includes a frame 1, an upper mold 2 and a lower mold 3 located on the frame 1 and arranged opposite to each other, a driving mechanism 4 connected to the upper mold 2 and driving it to move up and down, and a pressure regulating device connected to the upper mold 2 and used to regulate the pressure of the upper mold 2 on the lower mold 3;

[0029] The upper mold 2 includes an upper mold heating plate 5 and an upper mold plate 6 from top to bottom, and the lower mold 3 includes a lower mold heating plate 7 and a lower mold plate 8 from bottom to top. An upper groove is provided along the lower end surface of the upper mold plate 6, and an upper module 9 is detachably connected to the upper groove. A lower groove is provided along the upper end surface of the lower mold plate 8, and a lower module 10 is detachably connected to the lower groove. The upper module 9 and the lower module 10 are docked and matched to form a cavity, and the matching end surfaces of the upper module 9 and the lower module 10 are both arc-shaped.

[0030] In the technical solution of this utility model:

[0031] The upper mold 2 is composed of an upper mold heating plate 5 and an upper mold plate 6, and the lower mold 3 is composed of a lower mold heating plate 7 and a lower mold plate 8. This layered structure has a clear functional division. The upper mold heating plate 5 and the lower mold heating plate 7 are mainly responsible for providing the heat required in the hot pressing and bulging process. They can evenly transfer the temperature to the working area of ​​the mold to ensure that the printed matter is processed at a suitable temperature to achieve a good molding effect. The upper mold plate 6 and the lower mold plate 8 play the role of carrying and fixing the module. At the same time, they also cooperate with other components such as the frame 1, the drive mechanism 4 and the pressure regulating device to ensure the smooth progress of the entire hot pressing and bulging process.

[0032] An upper groove is formed on the lower end surface of the upper template 6, and a lower groove is formed on the upper end surface of the lower template 8. The upper module 9 and the lower module 10 are detachably connected in the upper and lower grooves respectively. The core of this design concept lies in flexibility and replaceability. When it is necessary to process printed products such as membrane switch stickers of different shapes and sizes, only the corresponding module needs to be replaced according to the specific product requirements, without having to replace the entire mold. This greatly simplifies the mold adjustment process and improves the convenience of production.

[0033] The mating end faces of the upper module 9 and the lower module 10 are both designed to be curved. This design is specially customized for the application requirements of membrane switch face stickers in electronic products, instruments and meters, etc. On the control panels of high-end electronic products, the curved design of the membrane switch face sticker can not only better fit the operating habits of fingers and the curved design of the product itself, providing a more comfortable and natural operating experience, but also enhance the product's sense of technology and fashion from the appearance, improve the overall quality and market competitiveness of the product, and achieve the purpose of preventing falling off and warping; by designing the mating end faces of the upper module 9 and the lower module 10 to be curved, the required three-dimensional shape can be accurately formed during the hot pressing and bulging process. Compared with traditional integral molds, the curved module can better adapt to the processing requirements of membrane switch face stickers for complex shapes such as special arcs, ensuring that each product can achieve high-precision molding effects and reducing product quality problems caused by shape errors;

[0034] The driving mechanism 4 (such as a hydraulic cylinder) is connected to the upper mold 2. Its main function is to provide power for the upper mold 2 to move up and down. During the hot pressing and bulging process, the driving mechanism 4 can accurately control the movement trajectory and speed of the upper mold 2, achieving smooth mold closing and opening operations of the upper mold 2 and the lower mold 3. When closing the mold, it ensures that the upper mold 2 and the lower mold 3 are accurately aligned, providing a stable working environment for hot pressing and bulging. When opening the mold, it can quickly and safely separate the upper mold 2 from the processed product to facilitate the next operation.

[0035] The pressure regulating device is connected to the upper mold 2. Its function is to adjust the pressure of the upper mold 2 on the lower mold 3. During the hot pressing and bulging process, the size of the pressure has a vital impact on the quality and molding effect of the product. Through the pressure regulating device, the pressure applied to the mold can be accurately controlled according to different printed materials, thicknesses and shape requirements. Appropriate pressure can ensure that the printed matter fully fits the shape of the module during the hot pressing process, achieving a good bulging effect, while avoiding product defects caused by excessive or insufficient pressure, such as excessive deformation, incomplete molding or loose bonding.

[0036] In summary, when faced with complex shapes or special arc requirements, the integral mold is difficult to accurately achieve the required three-dimensional effect due to its structural limitations. The arc surface module (upper module 9 and lower module 10) in this design can perfectly match the arc design of the membrane switch surface. During the hot pressing and bulging process, the shape of the product can be more accurately shaped. For example, for the membrane switch surface on the control panel of some high-end electronic products, the arc precision requirements are very high. The arc module can ensure that the arc of each product can meet the same high-precision standards, thereby improving product quality and consistency and reducing scrap caused by shape errors. Rate; In traditional hot pressing and bulging equipment, the mold is usually an integral design. When it is necessary to process membrane switch face stickers of different shapes and sizes, replacing the entire mold is a tedious and time-consuming task. For example, replacing an integral mold may take half an hour or even longer. During this period, the equipment needs to be shut down, resulting in production interruption. After adopting the detachable modular structure of this design, it is only necessary to replace the corresponding module for different product requirements. Generally, replacing a module may only take a few minutes. Compared with replacing the entire mold, the downtime of the equipment is greatly shortened, thereby significantly improving the actual operation time and production efficiency of the equipment.

[0037] In the embodiment of the present utility model, both sides of the upper module 9 are respectively provided with a first connecting block 11 extending outward, and a first groove 12 is provided along the lower end surface of the first connecting block 11 and penetrates the first connecting block 11, and the upper mold heating plate 5 is provided with a first threaded hole that matches the first groove 12;

[0038] In an embodiment of the present invention, a second connecting block 13 is respectively extended outward on both sides of the lower module 10, and a second groove 14 is provided along the upper end surface of the second connecting block 13, and the lower mold heating plate 7 is provided with a second threaded hole that matches the second groove 14.

[0039] A first connecting block 11 is provided on both sides of the upper module 9, extending outward. A first groove 12 is provided on the lower end surface of the first connecting block 11, and a first threaded hole that matches the first groove 12 is provided on the upper mold heating plate 5. This design enables the upper module 9 and the upper mold heating plate 5 to be connected through the first groove 12 and the first threaded hole. When the upper module 9 needs to be installed, the first groove 12 can be aligned with the first threaded hole, and then a connecting member 24 such as a bolt can be passed through the first groove 12 and screwed into the first threaded hole, thereby firmly fixing the upper module 9 to the upper mold plate 6 below the upper mold heating plate 5. This connection method not only ensures the stability of the upper module 9 during operation, but also facilitates disassembly and replacement.

[0040] A second connecting block 13 is extended outward on both sides of the lower module 10, and a second groove 14 is provided on the upper end surface of the second connecting block 13. A second threaded hole matching the second groove 14 is provided on the lower mold heating plate 7. The connection principle is similar to that of the upper module 9. By aligning the second groove 14 with the second threaded hole and connecting with bolts or other connecting parts 24, a stable connection between the lower module 10 and the lower mold plate 8 above the lower mold heating plate 7 is achieved. This design also facilitates the installation, disassembly and replacement of the lower module 10, and ensures that the lower module 10 can accurately cooperate with the upper module 9 during the hot pressing and bulging process.

[0041] In the embodiment of the present invention, first guide posts 15 are convexly provided on the first connecting block 11 and located on both sides of the first groove 12, and first guide grooves 16 are concavely provided on the second connecting block 13 and located on both sides of the second groove 14. The first guide posts 15 and the first guide grooves 16 are butt-jointed.

[0042] A second guide post 17 is convexly provided on the upper template 6 and located around the upper groove, and a second guide groove 18 is concavely provided on the lower template 8 and located around the lower groove. The second guide post 17 is docked with the second guide groove 18.

[0043] During the operation of the hot-pressing blistering equipment, accurate mold closing is the key to ensuring product quality. The cooperation between the first guide pin 15 and the first guide groove 16, as well as the cooperation between the second guide pin 17 and the second guide groove 18, ensure the accuracy of mold closing from two levels: between modules and between templates. When closing the mold, the first guide pin 15 can slide smoothly into the first guide groove 16, and the second guide pin 17 can slide smoothly into the second guide groove 18, so that the upper module 9 and the lower module 10 and the template are accurately aligned, thereby ensuring that the shape and size of the hot-pressing blister meet the design requirements.

[0044] The upper module 9 and the lower module 10 can not only meet the requirements of hot pressing forming of the product, but the extended first connecting block 11 and the second connecting block 13 can also cooperate with each other to accurately achieve the docking accuracy of the upper template 6 and the lower template 8.

[0045] In an embodiment of the present invention, the pressure regulating device (not shown) includes a pressure sensor and a pneumatic pressure regulating mechanism. The pressure sensor is used to detect the pressure applied by the upper mold 2, and the pneumatic pressure regulating mechanism adjusts the pressure of the upper mold 2 according to the detection data of the pressure sensor.

[0046] The pressure sensor is installed at a suitable position between the upper mold 2 and the lower mold 3. Its working principle is based on the deformation or change of electrical characteristics of the elastic element or sensitive element inside the sensor caused by pressure. When the upper mold 2 applies pressure to the lower mold 3 during the hot pressing process, the pressure sensor can sense the magnitude of this pressure in real time and convert it into an electrical signal. For example, the common piezoresistive pressure sensor has a semiconductor material whose internal resistance value changes when subjected to pressure. By measuring the change in resistance value, the corresponding pressure value can be obtained;

[0047] The air pressure regulating mechanism is connected to the upper mold 2 and is usually composed of an air source (such as an air compressor), an air pressure control valve, a cylinder and other components. When the pressure sensor detects the pressure applied by the upper mold 2, it will transmit the pressure data to the control system of the air pressure regulating mechanism. The control system compares and analyzes the preset pressure value and the detection data of the pressure sensor. If the detected pressure does not match the preset value, the control system will change the air pressure in the cylinder by adjusting the air pressure control valve, thereby adjusting the pressure of the upper mold 2. For example, when it is detected that the pressure is too high, the control system will reduce the opening of the air pressure control valve to reduce the air pressure in the cylinder, and then the pressure of the upper mold 2 will also decrease accordingly; conversely, when it is detected that the pressure is too low, the opening of the air pressure control valve will be increased, the air pressure in the cylinder will be increased, and the pressure of the upper mold 2 will increase.

[0048] In an embodiment of the present utility model, a accommodating cavity 19 corresponding to the upper mold 2 and the lower mold 3 is provided in the frame 1, and a bottom plate 20 is extended from the frame 1 toward the opening direction of the accommodating cavity 19, and a slide rail 21 is provided on the upper end surface of the bottom plate 20. The lower end surface of the lower mold heating plate 7 is slidably connected to the slide rail 21 through a slider, and a power device 22 is installed on the lower end surface of the bottom plate 20. The output end of the power device 22 is connected to a linear module 23, and the movable end of the linear module 23 is connected to the lower mold heating plate 7 through the bottom plate 20 through a connecting member 24, wherein a slide groove 25 is provided along the upper end surface of the bottom plate 20, which passes through itself and corresponds to the connecting member 24.

[0049] By driving the lower mold heating plate 7 to slide along the slide rail 21 through a power device 22 (such as a motor), the mold can be quickly opened and closed and the position adjusted. During the production process, when it is necessary to replace products of different specifications or perform equipment maintenance, the operator can conveniently move the lower mold 3 by controlling the power device 22, thereby improving work efficiency and convenience of operation. For example, when replacing the mold module of the membrane switch surface, moving the lower mold 3 to the appropriate position can make it easier to disassemble and install the module, reducing operation time and labor costs.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A hot pressing and bulging device for printed matter, characterized in that: The machine comprises a frame, an upper mold and a lower mold located on the frame and arranged opposite to each other, a driving mechanism connected to the upper mold and driving it to move up and down, and a pressure regulating device connected to the upper mold and used to regulate the pressure of the upper mold on the lower mold; The upper mold includes an upper mold heating plate and an upper mold plate from top to bottom, and the lower mold includes a lower mold heating plate and a lower mold plate from bottom to top. An upper groove is provided along the lower end surface of the upper mold plate, and an upper module is detachably connected to the upper groove. A lower groove is provided along the upper end surface of the lower mold plate, and a lower module is detachably connected to the lower groove. The upper module and the lower module are docked and matched to form a cavity, and the mating end surfaces of the upper module and the lower module are both arc-shaped.

2. The hot pressing and bulging device for printed matter according to claim 1, characterized in that: A first connecting block is respectively extended outwardly on both sides of the upper module, a first groove penetrating the first connecting block is opened along the lower end surface of the first connecting block, and the upper mold heating plate is provided with a first threaded hole that matches the first groove.

3. The hot pressing and bulging device for printed matter according to claim 2, characterized in that: A second connecting block is provided on both sides of the lower module and extends outward. A second groove is provided along the upper end surface of the second connecting block and penetrates the second connecting block. The lower mold heating plate is provided with a second threaded hole that matches the second groove.

4. The hot pressing and bulging device for printed matter according to claim 3, characterized in that: The first connecting block is provided with first guide posts on both sides of the first groove, and the second connecting block is provided with first guide grooves on both sides of the second groove. The first guide posts and the first guide grooves are butt-jointed.

5. The hot pressing and bulging device for printed matter according to claim 1 or 4, characterized in that: A second guide column is convexly provided on the upper template and located on the peripheral side of the upper groove, and a second guide groove is concavely provided on the lower template and located on the peripheral side of the lower groove, and the second guide column is docked with the second guide groove.

6. The hot pressing and bulging device for printed matter according to claim 1, characterized in that: The pressure regulating device includes a pressure sensor and a pneumatic pressure regulating mechanism. The pressure sensor is used to detect the pressure applied by the upper mold, and the pneumatic pressure regulating mechanism adjusts the pressure of the upper mold according to the detection data of the pressure sensor.

7. The hot pressing and bulging device for printed matter according to claim 1, characterized in that: The frame is provided with a accommodating cavity corresponding to the upper mold and the lower mold, and the frame is provided with a bottom plate extending toward the opening direction of the accommodating cavity, and a slide rail is provided on the upper end surface of the bottom plate, and the lower end surface of the lower mold heating plate is slidably connected to the slide rail through a slider, and a power device is installed on the lower end surface of the bottom plate, and the output end of the power device is connected to a linear module, and the movable end of the linear module is connected to the lower mold heating plate through the bottom plate through a connecting piece, wherein a slide groove is provided along the upper end surface of the bottom plate, which penetrates the bottom plate and corresponds to the connecting piece.

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