Glass fiber curved plate hot-pressing forming machine

Abstract

The utility model provides a glass fiber curved plate hot-pressing forming machine. The glass fiber curved plate hot-pressing forming machine comprises a rack, a plurality of groups of hot-pressing mechanisms and cooling mechanisms which are sequentially arranged on the rack in the machining direction, and a forming die assembly, the hot pressing mechanism and the cooling mechanism each comprise a supporting plate used for bearing the forming die assembly, an upper pressing plate correspondingly arranged above the supporting plate, a pressure bearing plate fixed above the upper pressing plate in parallel through a first thermal insulation assembly, a mounting plate fixedly arranged on the rack and arranged above the pressure bearing plate in parallel, and an oil hydraulic cylinder fixed to the mounting plate in a downward penetrating mode. The pressure bearing plate is vertically installed on the installation plate in a sliding mode through a plurality of sets of guide columns and guide sleeves, and a piston rod end cover of the oil hydraulic cylinder is connected to the top face of the pressure bearing plate in an abutting mode through a soft metal plate with a certain thickness. The soft metal plate is arranged between the end cover of the piston rod of the oil hydraulic cylinder and the bearing plate, so that the soft metal plate is deformed by the pressure of the oil hydraulic cylinder, the inclined stress is counteracted, the pressure can be uniformly distributed on the forming die assembly, and the forming quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot pressing molds for curved panels. Background Art

[0002] The back covers of some electronic products, such as mobile phones and tablets, are made of fiberglass. This material is formed by heating, pressurizing, and then cooling cut fiberglass sheets into curved back covers. Unlike materials like PC, PET, and glass, fiberglass sheets possess superior strength, rigidity, and heat resistance, so the hot press molding equipment used for these products must be designed accordingly. Furthermore, to improve production efficiency, multiple molding cavities are incorporated into the mold to simultaneously mold multiple curved panels. This requires very high uniformity in both the molding pressure and temperature applied to the mold, otherwise the molding quality will be subject to significant fluctuations. Utility Model Content

[0003] The utility model aims to provide a hot pressing molding machine suitable for molding glass fiber curved panels.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0005] A glass fiber curved panel hot pressing forming machine is used to hot press form glass fiber panels into curved panels, comprising a frame, multiple groups of hot pressing mechanisms and several groups of cooling mechanisms arranged in sequence on the frame along the processing direction, and a forming mold assembly that moves in sequence between the mechanisms; the hot pressing mechanism and the cooling mechanism both include a support plate for supporting the forming mold assembly, an upper pressure plate corresponding to the upper pressure plate, a pressure plate fixed in parallel to the upper pressure plate above the upper pressure plate through a first insulation component, a mounting plate fixed on the frame and arranged in parallel above the pressure plate, and a hydraulic cylinder fixed downwardly on the mounting plate; the pressure plate is vertically slidably mounted on the mounting plate by several groups of guide columns and guide sleeves, and the piston rod end cover of the hydraulic cylinder is connected to the top surface of the pressure plate by a soft metal plate of a certain thickness.

[0006] In a preferred embodiment, the piston rod end cover of the hydraulic cylinder, the soft metal plate, and the pressure plate are fastened by bolts; a plurality of recessed grooves are distributed on the top surface of the soft metal plate, so that the top surface of the soft metal plate is divided into a plurality of protruding areas.

[0007] In a preferred embodiment, the mounting plates of each group of the hot pressing mechanism and the cooling mechanism are independently arranged on the frame.

[0008] In a preferred embodiment, the mounting plates are located on the same horizontal plane, and both ends of the splicing edges of two adjacent mounting plates are supported and fixed to the frame by the same vertical plate.

[0009] In a preferred embodiment, reinforcing plates are vertically fixed to the splicing edges on both sides of the upper edge of each mounting plate.

[0010] In a preferred embodiment, heating elements are provided inside the support plate and the upper pressing plate of the hot pressing mechanism; and cooling water channels are provided inside the support plate and the upper pressing plate of the cooling mechanism.

[0011] In a preferred embodiment, the frame is further provided with a bottom plate for supporting and mounting each of the support plates, and a second thermal insulation component is provided between the bottom plate and each of the support plates.

[0012] In a preferred embodiment, the first thermal insulation component and the second thermal insulation component both include a plurality of connecting columns of equal height distributed in a matrix, and a fiberglass insulation board provided on one side surface of the bottom plate or the pressure plate.

[0013] In a preferred embodiment, the support plates of the hot pressing mechanism and the cooling mechanism are distributed along a straight line, and the top surfaces are located on the same horizontal plane; the molding machine also includes a stepping pushing device for moving the molding mold assembly in sequence between the support plates along the processing direction, and the stepping pushing device includes a mounting rod arranged along the processing direction, a rotating driving assembly for driving the mounting rod to rotate around the axis, a plurality of shifting rods corresponding to the positions on both sides of each support plate and fixed vertically on the mounting rod, and a push plate driving assembly for driving the mounting rod and the rotating driving assembly as a whole to move forward and backward in steps along the processing direction.

[0014] A preferred solution is that the molding machine also includes a material changing table arranged parallel to the front side of each of the hot pressing mechanisms and the cooling mechanism and flush with the top surface of each of the support plates, a loading pushing component for pushing the molding die assembly from the material changing table to the support plate at the head end, and a unloading pushing component for pushing the molding die assembly on the support plate at the tail end to the material changing table; the material changing table is also provided with a material changing pushing component for pushing the molding die assembly along its head and tail direction, and a mold opening device for opening and closing the molding die assembly, the mold opening device including a clamping jaw assembly for clamping the upper mold plate of the molding die assembly, and a mold opening drive cylinder for driving the clamping jaw assembly to rise and fall.

[0015] The beneficial effects of the present invention are as follows: by setting up multiple sets of hot pressing mechanisms to gradually heat the fiberglass board, and providing a sufficiently large pressing force through the hydraulic cylinder during the heating and cooling stages, and by setting a soft metal plate with a certain thickness between the piston rod end cover of the oil hydraulic cylinder and the pressure plate, when the output direction of the oil hydraulic cylinder is not vertical due to factors such as assembly errors, and the pressure cannot be evenly applied to the forming mold assembly, the huge pressure of the oil hydraulic cylinder will cause the soft metal plate to deform accordingly with the force distribution, thereby offsetting the inclined force, so that the pressure can be evenly distributed on the forming mold assembly, and thus improving the forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 The overall structure of the hot pressing molding equipment in the embodiment is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the hot pressing molding equipment in the embodiment is shown in FIG. Figure 2 ;

[0019] Figure 3 This is a schematic structural diagram of one set of hot pressing mechanisms in the embodiment;

[0020] Figure 4 for Figure 3 Schematic diagram of the decomposition of the middle part structure;

[0021] Figure 5 Schematic diagram of the structure of the stepping propulsion device in the embodiment;

[0022] Figure 6 Schematic diagram of the structure of the material changing platform in the embodiment. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] It should be noted that the words indicating directions in this application document, such as top surface, bottom surface, vertical direction, etc., are only for the convenience of a more intuitive description of the structure in combination with the drawings, and are not intended to limit the product structure.

[0025] refer to Figures 1 to 6As shown, a glass fiber curved panel hot press forming machine is used to hot press and form glass fiber panels into curved panels, comprising a frame 1, eight sets of hot pressing mechanisms 2A and two sets of cooling mechanisms 2B arranged on the frame 1 in sequence along the processing direction, and a forming die assembly 3 that moves in sequence between the mechanisms; the hot pressing mechanism 2A and the cooling mechanism 2B each include a support plate 21 for supporting the forming die assembly 3, an upper pressing plate 22 corresponding to the support plate 21, and a first insulation component 23 parallel to the upper pressing plate 22. The pressure plate 24 is fixed to the upper pressure plate 22, the mounting plate 25 is fixed to the frame 1 and arranged parallel to the pressure plate 24, and the hydraulic cylinder 26 is downwardly inserted and fixed to the mounting plate 25; the pressure plate 24 is vertically slidably mounted on the mounting plate 25 via a plurality of guide pillars 271 and guide sleeves 272, and the piston rod end cover 261 of the hydraulic cylinder 26 is connected to the top surface of the pressure plate 24 via a soft metal plate 262 of a certain thickness. The support plate 21 and the upper pressure plate 22 of the hot pressing mechanism 2A are both provided with heating elements 221; and the support plate 21 and the upper pressure plate 22 of the cooling mechanism 2B are both provided with cooling water channels. The soft metal plate 262 can be made of a metal material with easily deformable properties, such as 5052 soft aluminum or copper.

[0026] During processing, the fiberglass board is first placed into the forming mold assembly 3, and the forming mold assembly 3 is sequentially placed into each hot pressing mechanism 2A along the processing direction for gradual heating and pressurization, and then sequentially enters each cooling mechanism 2B for gradual pressure holding, cooling and shaping, and production is completed. When the hot pressing mechanism 2A and the cooling mechanism 2B are working, the forming mold assembly 3 is placed on the support plate 21, and the piston rod of the hydraulic cylinder 26 drives the pressure plate 24 and drives the lower pressure plate to descend and press the forming mold assembly 3, and heats the forming mold assembly 3 through the heating element 221, or cools the forming mold assembly 3 through the cooling water channel. After heating or pressurizing for a set time, the lower pressure plate is reset and the forming mold assembly 3 is sent to the next process.

[0027] By setting up multiple sets of hot pressing mechanisms 2A, the fiberglass board is gradually heated, and a sufficiently large pressing force is provided by the hydraulic cylinder during the heating and cooling stages. By setting a soft metal plate 262 with a certain thickness between the piston rod end cover 261 of the oil hydraulic cylinder 26 and the pressure plate 24, when the output direction of the oil hydraulic cylinder 26 is not vertical due to factors such as assembly errors, and the pressure cannot be evenly applied to the forming mold assembly 3, the huge pressure of the oil hydraulic cylinder 26 will cause the soft metal plate 262 to deform accordingly with the force distribution, thereby offsetting the inclined force, so that the pressure can be evenly distributed on the forming mold assembly 3, thereby improving the forming quality.

[0028] In a preferred embodiment, the piston rod end cap 261 of the hydraulic cylinder 26, the soft metal plate 262, and the pressure plate 24 are secured together by bolts. The top surface of the soft metal plate 262 is provided with a plurality of recessed grooves 2621, dividing the top surface of the soft metal plate 262 into a plurality of protruding areas 2622. This division of the top surface of the soft metal plate 262 into a plurality of protruding areas 2622 facilitates collapse and deformation of the isolated areas 2622 of the soft metal plate 262 when squeezed by the piston rod end cap 261 of the hydraulic cylinder 26, thereby achieving uniform pressure distribution.

[0029] In a preferred embodiment, the mounting plates 25 of each group of the hot pressing mechanism 2A and the cooling mechanism 2B in this embodiment are independently arranged on the frame 1. Since the driving force of the hydraulic cylinder 26 is very large, although each mechanism shares a whole mounting plate 25, although the integrity is stronger, the uneven force between the mechanisms can easily cause the mounting plate 25 to deform, thereby affecting the balance of pressure when each mechanism presses down. By independently arranging each mounting plate 25 on the frame 1, the mechanisms do not affect each other, which can further improve the balance of pressure between the mechanisms, thereby ensuring the molding quality.

[0030] In a preferred embodiment, the mounting plates 25 of this embodiment are located on the same horizontal plane, and both ends of the splicing edges of two adjacent mounting plates 25 are supported and fixed to the frame 1 by the same vertical plate 28. Supporting the mounting plates 25 with the vertical plates 28 provides stronger support, while sharing the vertical plate 28 between adjacent mounting plates 25 simplifies the structure and improves its integrity. Furthermore, each mounting plate 25 is vertically fixed with a reinforcement plate along both sides of the splicing edge. These vertical reinforcement plates prevent individual mounting plates 25 from bending or deforming, further improving the balance of pressure across the various mechanisms.

[0031] In a preferred embodiment, the frame 1 of this embodiment further comprises a base plate 11 for supporting and mounting the support plates 21. A second thermal insulation assembly 29 is provided between the base plate 11 and the support plates 21. Mounting the support plates 21 of each mechanism on the same base plate 11 improves the stability of the support and the integrity of the structure. The second thermal insulation assembly 29 prevents heat transfer.

[0032] A preferred solution is that the first insulation component 23 and the second insulation component 29 of this embodiment both include a plurality of connecting columns 231 of equal height distributed in a matrix, and a fiberglass insulation board 232 provided on one side surface of the base plate 11 or the pressure plate 24.

[0033] A preferred solution is that the support plates 21 of each of the hot pressing mechanisms 2A and the cooling mechanisms 2B in this embodiment are distributed along a straight line, and the top surfaces are located on the same horizontal plane; the molding machine also includes a stepping pushing device 4 for moving the molding die assembly 3 in sequence between each of the support plates 21 along the processing direction, and the stepping pushing device 4 includes a mounting rod 41 arranged along the processing direction, a rotating driving assembly 42 for driving the mounting rod 41 to rotate around the axis, a plurality of shifting rods 43 corresponding to the positions on both sides of each of the support plates 21 and fixed vertically on the mounting rod 41, and a push plate driving assembly 44 for driving the mounting rod 41 and the rotating driving assembly 42 to move forward and backward in the processing direction as a whole. The rotary drive assembly 42 can use a cylinder and lever structure to drive the mounting rod 41 to rotate, while the push plate drive assembly 44 can achieve step-by-step linear movement through a motor and a synchronous belt structure. The above-mentioned drive structures are all conventional technologies and will not be described in detail. During operation, the rotary drive assembly 42 drives each lever 43 to rotate between two adjacent forming die assemblies 3, and then drives the push plate 44 to step forward, thereby pushing each forming die assembly 3 to the next station. The step-by-step propulsion device 4 is used to step forward each forming die assembly 3, with a high degree of automation and precise movement position. In other embodiments, the forming die assembly 3 can also be moved manually or with the help of existing automated devices such as a robot.

[0034] A preferred solution, the molding machine of this embodiment also includes a material changing table 5 arranged in parallel in front of each of the hot pressing mechanisms 2A and the cooling mechanism 2B and flush with the top surface of each of the support plates 21, a loading pushing component 51 for pushing the molding die assembly 3 from the material changing table 5 to the support plate 21 at the head end, and a unloading pushing component 52 for pushing the molding die assembly 3 on the support plate 21 at the tail end to the material changing table 5; the material changing table 5 is also provided with a material changing pushing component 53 for pushing the molding die assembly 3 along its head and tail direction, and a mold opening device 54 for opening and closing the molding die assembly 3, the mold opening device 54 includes a clamping jaw assembly 541 for clamping the upper mold plate of the molding die assembly 3, and a mold opening drive cylinder 542 for driving the clamping jaw assembly 541 to rise and fall. The loading and unloading push components 51 and 52 can be driven by cylinders to drive push plates, while the re-material push component 53 can be driven by motors and synchronous belts to drive push plates. These are all prior art and will not be described in detail. During operation, the mold opening device 54 opens the forming mold assembly 3, and the worker places the fiberglass board into the mold cavity of the forming mold assembly 3. The mold opening device 54 then closes the forming mold assembly 3. The re-material push component 53 then pushes it to one end of the re-material table 5. The loading push component 51 pushes it to the support plate 21 of the hot pressing mechanism 2A at the head end. After the molding is completed, the forming mold assembly 3 is pushed back from the support plate 21 of the last group of cooling mechanisms 2B to the other end of the re-material table 5 by the unloading push component 52. The re-material push component 53 then pushes it to the bottom of the mold opening device 54. The clamping claw assembly 541 opens the forming mold assembly 3, and the worker takes out the product, completing a production cycle. The operator only needs to put in the fiberglass board and take out the curved panel, which has a high degree of automation.

[0035] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A glass fiber curved panel hot press forming machine for hot press forming glass fiber panels into curved panels, comprising a frame, multiple sets of hot press mechanisms and multiple sets of cooling mechanisms sequentially arranged on the frame along a processing direction, and a forming die assembly that moves sequentially between the mechanisms; characterized in that: The hot pressing mechanism and the cooling mechanism both include a support plate for supporting the forming mold assembly, an upper pressure plate correspondingly arranged above the support plate, a pressure plate fixed parallel to the upper pressure plate above the upper pressure plate through a first thermal insulation component, a mounting plate fixed on the frame and arranged parallel to the pressure plate above the pressure plate, and a hydraulic cylinder downwardly passed through and fixed on the mounting plate; the pressure plate is vertically slidably mounted on the mounting plate through a number of groups of guide columns and guide sleeves, and the piston rod end cover of the hydraulic cylinder is connected to the top surface of the pressure plate by a soft metal plate of a certain thickness.

2. The glass fiber curved panel hot pressing molding machine according to claim 1, characterized in that: The piston rod end cover of the hydraulic cylinder, the soft metal plate, and the pressure plate are locked by bolts; a plurality of recessed grooves are distributed on the top surface of the soft metal plate, so that the top surface of the soft metal plate is divided into a plurality of protruding areas.

3. The glass fiber curved panel hot pressing molding machine according to claim 1, characterized in that: The mounting plates of each group of the hot pressing mechanisms and the cooling mechanisms are independently arranged on the frame.

4. The glass fiber curved panel hot pressing molding machine according to claim 3, characterized in that: The mounting plates are located on the same horizontal plane, and both ends of the splicing edges of two adjacent mounting plates are supported and fixed on the frame by the same vertical plate.

5. The glass fiber curved panel hot pressing molding machine according to claim 4, characterized in that: Reinforcement plates are also vertically fixed to the splicing edges on both sides of the upper edge of each installation plate.

6. The glass fiber curved panel hot pressing molding machine according to claim 1, characterized in that: The support plate and the upper pressing plate of the hot pressing mechanism are both provided with heating elements therein; and the support plate and the upper pressing plate of the cooling mechanism are both provided with cooling water channels therein.

7. The glass fiber curved panel hot pressing molding machine according to claim 1, characterized in that: The frame is further provided with a bottom plate for supporting and installing each of the support plates, and a second thermal insulation component is provided between the bottom plate and each of the support plates.

8. The glass fiber curved panel hot pressing molding machine according to claim 7, characterized in that: The first thermal insulation component and the second thermal insulation component both include a plurality of connecting columns of equal height distributed in a matrix, and a glass fiber thermal insulation board provided on one side surface of the bottom plate or the pressure plate.

9. The glass fiber curved panel hot pressing molding machine according to claim 1, characterized in that: The support plates of each of the hot pressing mechanisms and the cooling mechanism are distributed along a straight line, and the top surfaces are located on the same horizontal plane; the molding machine also includes a stepping pushing device for moving the molding die assembly in sequence between each of the support plates along the processing direction, and the stepping pushing device includes a mounting rod arranged along the processing direction, a rotating driving assembly for driving the mounting rod to rotate around the axis, a plurality of shifting rods corresponding to the positions on both sides of each of the support plates and fixed vertically on the mounting rod, and a push plate driving assembly for driving the mounting rod and the rotating driving assembly as a whole to move forward and backward in steps along the processing direction.

10. The glass fiber curved panel hot pressing molding machine according to claim 9, characterized in that: The molding machine also includes a material changing table arranged parallel to the front side of each of the hot pressing mechanisms and the cooling mechanism and flush with the top surface of each of the support plates, a loading pushing component for pushing the molding die assembly from the material changing table to the support plate at the head end, and a unloading pushing component for pushing the molding die assembly on the support plate at the tail end to the material changing table; the material changing table is also provided with a material changing pushing component for pushing the molding die assembly along its head-to-tail direction, and a mold opening device for opening and closing the molding die assembly, the mold opening device including a clamping jaw assembly for clamping the upper mold plate of the molding die assembly, and a mold opening drive cylinder for driving the clamping jaw assembly to rise and fall.

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