Vacuum forming mold for plastic sheet composite material

Abstract

The utility model discloses a plastic sheet composite material vacuum forming mold, and belongs to the field of plastic forming molds. The utility model relates to a plastic sheet composite material vacuum plastic uptake forming mould, which comprises a rack, a positioning frame, a plastic uptake forming mould, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body, a plastic uptake forming mould body and a plastic uptake forming mould body, the positioning frame is driven by the first adjusting part to move downwards, a template can be coated with a sheet, air in the air supply part can be extruded and discharged through the air blowing nozzle, dust particles and plastic residues on the surface of a cavity of the template are cleaned, meanwhile, in the cleaning process, the second adjusting part is used for adjusting the angle of the air blowing nozzle, and the air blowing nozzle is prevented from being blocked. And after the plastic product is formed, the first adjusting piece moves upwards to relieve abutting against the positioning frame, and automatic demolding of the plastic product is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming mold technology, and in particular to a vacuum forming mold for plastic sheet composite materials. Background Technology

[0002] Vacuum forming, often called thermoforming, is a plastic processing technology. The main principle is to heat a flat, rigid plastic sheet until it softens, then use a vacuum to adhere it to the surface of a mold, where it cools and solidifies. It is widely used in industries such as plastic packaging, lighting, advertising, and decoration.

[0003] Vacuum forming involves fixing thermoplastic sheets or plates onto a mold, heating them with a radiant heater to a softening temperature, and then using a vacuum pump to remove the air between the mold and the sheet, causing the sheet preform to be shaped according to the mold contour. As the vacuum level increases, the forming pressure below the preform is only 0.06-0.085 MPa, while the air pressure above the preform remains at around 0.1 MPa. After cooling and solidification, compressed air is used to blow the product out of the mold for demolding. Vacuum forming is widely used to produce calcium plastic ceiling decoration materials, washing machine and refrigerator housings, motor housings, artworks, and household goods. The materials processed by vacuum forming are thin sheets of polyvinyl chloride, polystyrene, polyethylene, etc.

[0004] In traditional vacuum forming mold processing, dust particles and plastic residues easily adhere to the surface of the mold cavity, requiring staff to check and clean it regularly. Furthermore, the finished product needs external power equipment to assist in demolding, thus reducing the processing efficiency of plastic products. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the existing technology where vacuum forming molds are prone to accumulating dust and plastic residue in the cavity, requiring frequent manual cleaning, and the demolding of finished products is highly dependent on external power assistance, resulting in limited overall efficiency of plastic processing. Therefore, this invention proposes a vacuum forming mold for plastic sheet composite materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vacuum forming mold for plastic sheet composite materials includes a frame on which a vacuum component and a mold are mounted. The mold further includes: a positioning frame mounted on the frame, with its bottom surface facing the top surface of the mold; a first adjusting component on the frame for driving the positioning frame to rise and fall; and an air nozzle on the frame, wherein a T-shaped rod is fixedly connected to the frame, and the air nozzle is connected to the T-shaped rod via a second adjusting component. An air supply component is provided on the frame, which causes the air nozzle to blow air towards the surface of the mold when the positioning frame rises and falls. A dust collection component is also provided on the frame for collecting dust.

[0008] For vertical adjustment of the plastic sheet, preferably, the first adjusting component includes a fixed frame fixedly mounted on the machine frame, and a hydraulic cylinder is fixedly mounted on the fixed frame. The output end of the hydraulic cylinder passes through the fixed frame and is located at the upper end of the positioning frame.

[0009] To clean dust particles and plastic residue from the surface of the template cavity, preferably, the air supply component includes: a positioning cylinder, fixedly installed at the four corners of the frame, with a piston rod slidably connected inside the positioning cylinder, and the end of the piston rod away from the positioning cylinder being fixedly connected to the positioning frame; an air supply pipe, fixedly connected to the positioning cylinder, with the end of the air supply pipe away from the positioning cylinder being fixedly connected to the air nozzle, and an air inlet pipe fixedly connected to the bottom of the positioning cylinder, with a filter screen fixedly installed inside the air inlet pipe.

[0010] To facilitate automatic demolding of the finished product, a first spring is further provided inside the positioning cylinder, with both ends of the first spring being fixedly connected to the piston rod and the positioning cylinder, respectively.

[0011] To enable air intake into the positioning cylinder, a one-way valve is fixedly fitted onto the air intake pipe, and the one-way valve is fixedly connected to the positioning cylinder.

[0012] To improve the cleaning range of the air nozzle, preferably, the second adjusting component includes: an electric telescopic rod, fixedly installed on the frame, with a connecting rod rotatably connected to the telescopic end of the electric telescopic rod, and an adjusting block rotatably connected to the end of the connecting rod away from the electric telescopic rod, the adjusting block being slidably connected inside the T-shaped rod and sleeved on the air nozzle; and a second spring, disposed on the T-shaped rod, with both ends of the second spring being fixedly connected to the adjusting block and the T-shaped rod respectively.

[0013] For vacuum treatment of plastic sheets and templates, preferably, the vacuum component includes a vacuum pump and a perforated plate fixedly mounted on a frame, the perforated plate being in contact with the template, and the air inlet of the vacuum pump being connected to the perforated plate via a pipe.

[0014] For the purpose of adsorbing and collecting dust, preferably, the dust collection component includes a fan and a dust collection hood fixedly installed on the frame, the suction end of the fan is fixedly connected to a dust collection shell, and the end of the dust collection shell away from the fan is fixedly connected to the dust collection hood.

[0015] Compared with the prior art, this utility model provides a vacuum forming mold for plastic sheet composite materials, which has the following beneficial effects:

[0016] 1. The vacuum forming mold for plastic sheet composite materials, through the setting of a one-way valve, can block the gas inside the positioning cylinder on the one hand, and facilitate the air intake of the positioning cylinder on the other hand.

[0017] 2. The vacuum forming mold for plastic sheet composite materials, through the setting of the first spring, can reset the positioning frame, thereby realizing automatic demolding of the finished product.

[0018] The parts of this device not described herein are the same as or can be implemented using existing technology. This utility model uses the first adjusting component to drive the positioning frame to move downward, which not only covers the sheet material on the template, but also squeezes the gas inside the air supply component and discharges it through the air nozzle to clean dust particles and plastic residues on the surface of the template cavity. At the same time, during the cleaning process, the second adjusting component is used to adjust the angle of the air nozzle to improve the cleaning range and quality. After the plastic product is formed, the first adjusting component moves upward to release the clamping of the positioning frame, realizing automatic demolding of the plastic product. Attached Figure Description

[0019] Figure 1 This is an isometric view of the structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the frame structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model;

[0021] Figure 3 This is a bottom view schematic diagram of the frame structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the positioning frame structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model.

[0023] Figure 5 This is a cross-sectional schematic diagram of the positioning cylinder structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model;

[0024] Figure 6 This utility model proposes a vacuum forming mold for plastic sheet composite materials. Figure 5 Enlarged view of the structure at point A in the middle;

[0025] Figure 7 This is an isometric schematic diagram of the dust collection component structure of a vacuum forming mold for plastic sheet composite materials proposed in this utility model.

[0026] In the diagram: 1. Frame; 2. Vacuum pump; 21. Orifice plate; 3. Positioning frame; 4. T-bar; 5. Air nozzle; 6. Fan; 61. Dust hood; 62. Dust collection shell; 7. Adjusting block; 8. Fixing frame; 81. Hydraulic cylinder; 82. Positioning cylinder; 83. Piston rod; 84. Air supply pipe; 85. Air inlet pipe; 86. First spring; 87. One-way valve; 9. Electric telescopic rod; 91. Connecting rod; 92. Second spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Example:

[0030] Reference Figures 1-7 A vacuum forming mold for plastic sheet composite materials includes a frame 1, on which vacuum components and a mold are mounted. The mold further includes a positioning frame 3 mounted on the frame 1, with the bottom surface of the positioning frame 3 facing the top surface of the mold. A first adjusting component is provided on the frame 1 for driving the positioning frame 3 to rise and fall. An air nozzle 5 is provided on the frame 1, with an internal electric heating wire. When blowing air to remove dust from the mold, the air nozzle 5 prevents the temperature of the plastic sheet from dropping, thus ensuring the quality of the vacuum forming process. A T-shaped rod 4 is fixedly connected to the frame 1, and the air nozzle 5 is connected to the T-shaped rod 4 via a second adjusting component. An air supply component is provided on the frame 1. When the positioning frame 3 rises and falls, the air supply component causes the air nozzle 5 to blow air towards the surface of the mold. A dust collection component is provided on the frame 1 for collecting dust.

[0031] Specifically, the first adjusting component moves the positioning frame 3 downward, which not only covers the sheet material onto the template, but also squeezes the gas inside the air supply component, causing it to be discharged through the air nozzle 5 to clean dust particles and plastic residues on the surface of the template cavity. At the same time, during the cleaning process, the second adjusting component is used to adjust the angle of the air nozzle 5 to improve the cleaning range and quality. After the plastic product is formed, the first adjusting component moves upward to release the clamping of the positioning frame 3, realizing automatic demolding of the plastic product.

[0032] The first adjusting component includes a fixed frame 8 fixedly installed on the frame 1. Two hydraulic cylinders 81 are fixedly installed on the fixed frame 8. The output end of the hydraulic cylinder 81 passes through the fixed frame 8 and is located at the upper end of the positioning frame 3. The air supply component includes: a positioning cylinder 82 fixedly installed at the four corners of the frame 1. A piston rod 83 is slidably connected inside the positioning cylinder 82. The end of the piston rod 83 away from the positioning cylinder 82 is fixedly connected to the positioning frame 3. An air supply pipe 84 is fixedly connected to the positioning cylinder 82. The end of the air supply pipe 84 away from the positioning cylinder 82 is fixedly connected to the air nozzle 5. An air inlet pipe 85 is fixedly connected to the bottom of the positioning cylinder 82. A filter screen is fixedly installed inside the air inlet pipe 85. A first spring 86 is provided inside the positioning cylinder 82. The two ends of the first spring 86 are fixedly connected to the piston rod 83 and the positioning cylinder 82, respectively. A one-way valve 87 is fixedly sleeved on the air inlet pipe 85. The one-way valve 87 is fixedly connected to the positioning cylinder 82.

[0033] Specifically, through the cooperation of the first adjusting component and the air supply component, when the positioning frame 3 moves the plastic sheet downward, the positioning frame 3 moves the piston rod 83 downward, causing it to squeeze the gas inside the positioning cylinder 82 to be discharged into the air supply pipe 84. The gas inside the air supply pipe 84 is discharged through the air nozzle 5, which can clean the dust particles and plastic residue on the surface of the template cavity, thereby improving the quality of the product vacuum forming. Furthermore, after the first adjusting component releases its clamping force on the positioning frame 3, the product can be automatically demolded by the reaction force of the first spring 86, thereby improving the product production efficiency.

[0034] By using the one-way valve 87, the gas inside the positioning cylinder 82 can be blocked on the one hand, and the air intake of the positioning cylinder 82 can be facilitated on the other hand.

[0035] The second adjusting component includes an electric telescopic rod 9 fixedly installed on the frame 1. The telescopic end of the electric telescopic rod 9 is rotatably connected to a connecting rod 91 via an I-beam frame. The end of the connecting rod 91 away from the electric telescopic rod 9 is rotatably connected to an adjusting block 7. The adjusting block 7 is slidably connected inside the T-shaped rod 4 and sleeved on the surface of the air nozzle 5. A second spring 92 is provided on the T-shaped rod 4, and the two ends of the second spring 92 are fixedly connected to the adjusting block 7 and the T-shaped rod 4 respectively.

[0036] Specifically, by setting a second adjusting member, the extension end of the electric telescopic rod 9 drives the connecting rod 91 to move upward, which can adjust the lateral angle of the air nozzle 5, thereby improving the cleaning quality of the template cavity surface, and the second spring 92 can be used to reset the air nozzle 5.

[0037] The vacuum component includes a vacuum pump 2 and an orifice plate 21 fixedly mounted on the frame 1. The template is mounted on the orifice plate 21, and the air inlet of the vacuum pump 2 is connected to the inner cavity of the orifice plate 21 through a connecting pipe.

[0038] Specifically, by setting up a vacuum component, the air between the template and the plastic sheet can be effectively removed, thereby improving the quality of the plastic sheet vacuum forming process.

[0039] The dust collection component includes a fan 6 and a dust collection hood 61 fixedly installed on the frame 1. The suction end of the fan 6 is fixedly connected to a dust collection shell 62. The dust collection shell 62 is equipped with a filter element for filtering dust. The end of the dust collection shell 62 away from the fan 6 is fixedly connected to the dust collection hood 61. Both ends of the dust collection shell 62 are threadedly connected to the suction end of the fan 6 and the exhaust end of the dust collection hood 61.

[0040] Specifically, by setting up a dust collection component, the dust can be sucked into the dust collection shell 62 during the blowing dust removal process of the air nozzle 5, which facilitates the collection of dust. Furthermore, the use of a threaded connection makes it convenient for staff to disassemble and maintain the dust collection shell 62.

[0041] Working principle: When performing vacuum forming of plastic sheet, the operator places the sheet into the positioning frame 3, and then starts the external heating device to heat the sheet. After the sheet is heated, the operator uses an external control switch to start the hydraulic cylinder 81. When the output end of the hydraulic cylinder 81 moves downward, it presses against the positioning frame 3 and moves downward, so that it contacts the surface of the frame 1 on which the template is placed. After the sheet is wrapped on the template, the operator starts the vacuum pump 2 to extract the air between the sheet and the template, so that the sheet deforms and sticks to the template, thus completing the vacuum forming process of the sheet.

[0042] When the positioning frame 3 moves downward, it will drive the piston rod 83 to move downward. When the piston rod 83 moves downward, it will compress the gas inside the positioning cylinder 82. Since the one-way valve 87 is fixedly sleeved on the air inlet pipe 85, the gas can only be discharged through the air delivery pipe 84. When the gas inside the air delivery pipe 84 is discharged through the air nozzle 5, it can blow and clean the dust particles and plastic residue on the surface of the template cavity. During the cleaning process, the fan 6 is started. The fan 6 draws air into the dust collection shell 62, making its interior a negative pressure state. At this time, the dust suction hood 61 can suck the dust into the dust collection shell 62, avoiding dust splashing and causing pollution to the surrounding environment and the sheet.

[0043] During the air blowing cleaning process of the air nozzle 5, the staff uses an external control switch to start the electric telescopic rod 9. The telescopic end of the electric telescopic rod 9 drives one end of the connecting rod 91 to move upward. At this time, the other end of the connecting rod 91 drives the adjusting block 7 to move laterally inside the T-shaped rod 4. By using the adjusting block 7 to drive the air nozzle 5 to move laterally, the cleaning range and quality of the template cavity surface can be improved.

[0044] After the sheet is formed and cooled, the operator uses an external control switch to start the hydraulic cylinder 81. After the output end of the hydraulic cylinder 81 moves upward to release the clamping of the positioning frame 3, the positioning frame 3 can be reset under the reaction force of the first spring 86, thereby completing the automatic demolding of the product. In addition, during the process of the piston rod 83 resetting and moving upward, the positioning cylinder 82 is in a negative pressure state. At this time, external gas enters the positioning cylinder 82 through the air inlet pipe 85 to replenish the gas.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum forming mold for plastic sheet composite materials, comprising a frame (1), wherein a vacuum component and a mold are mounted on the frame (1), characterized in that, Also includes: The positioning frame (3) is installed on the frame (1). The bottom surface of the positioning frame (3) faces the top surface of the mold, and the frame (1) is provided with a first adjusting component for driving the positioning frame (3) to rise and fall. An air nozzle (5) is mounted on the frame (1). The frame (1) is fixedly connected to a T-shaped rod (4), and the air nozzle (5) is connected to the T-shaped rod (4) through a second adjusting component. The frame (1) is provided with an air supply component. When the positioning frame (3) is raised or lowered, the air supply component will cause the air nozzle (5) to blow air toward the surface of the mold. The frame (1) is provided with a dust collection component for collecting dust.

2. The vacuum forming mold for plastic sheet composite materials according to claim 1, characterized in that, The first adjusting component includes a fixed frame (8) fixedly installed on the frame (1), and a hydraulic cylinder (81) is fixedly installed on the fixed frame (8). The output end of the hydraulic cylinder (81) passes through the fixed frame (8) and is located at the upper end of the positioning frame (3).

3. The vacuum forming mold for plastic sheet composite materials according to claim 1, characterized in that, The gas supply component includes: Positioning cylinder (82) is fixedly installed at the four corners of the frame (1). A piston rod (83) is slidably connected inside the positioning cylinder (82). The end of the piston rod (83) away from the positioning cylinder (82) is fixedly connected to the positioning frame (3). An air supply pipe (84) is fixedly connected to the positioning cylinder (82). The end of the air supply pipe (84) away from the positioning cylinder (82) is fixedly connected to the air nozzle (5). An air inlet pipe (85) is fixedly connected to the bottom of the positioning cylinder (82). A filter screen is fixedly installed inside the air inlet pipe (85).

4. The vacuum forming mold for plastic sheet composite materials according to claim 3, characterized in that, The positioning cylinder (82) is provided with a first spring (86), and the two ends of the first spring (86) are fixedly connected to the piston rod (83) and the positioning cylinder (82) respectively.

5. The vacuum forming mold for plastic sheet composite materials according to claim 3, characterized in that, A one-way valve (87) is fixedly sleeved on the air intake pipe (85), and the one-way valve (87) is fixedly connected to the positioning cylinder (82).

6. The vacuum forming mold for plastic sheet composite materials according to claim 1, characterized in that, The second adjusting member includes: An electric telescopic rod (9) is fixedly installed on the frame (1). The telescopic end of the electric telescopic rod (9) is rotatably connected to a connecting rod (91). The end of the connecting rod (91) away from the electric telescopic rod (9) is rotatably connected to an adjusting block (7). The adjusting block (7) is slidably connected inside the T-shaped rod (4) and sleeved on the air nozzle (5). The second spring (92) is mounted on the T-shaped rod (4), and the two ends of the second spring (92) are fixedly connected to the adjusting block (7) and the T-shaped rod (4) respectively.

7. The vacuum forming mold for plastic sheet composite materials according to claim 1, characterized in that, The vacuum component includes a vacuum pump (2) and an orifice plate (21) fixedly mounted on the frame (1). The orifice plate (21) is in contact with the template, and the air inlet of the vacuum pump (2) is connected to the orifice plate (21) through a pipe.

8. The vacuum forming mold for plastic sheet composite materials according to claim 1, characterized in that, The dust collection component includes a fan (6) and a dust collection hood (61) fixedly installed on the frame (1). The suction end of the fan (6) is fixedly connected to a dust collection shell (62), and the end of the dust collection shell (62) away from the fan (6) is fixedly connected to the dust collection hood (61).

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