A surface calendering device for hot-pressed plastic plates

Abstract

The utility model relates to the field of plastic board processing equipment, concretely relates to a plastic board surface calendering device after hot pressing, including base, the top fixedly connected with frame of base, the inside of frame is provided with two press rolls in the interval of up and down, both ends of two press rolls all rotatably connect with sliding block, the front and back of frame all are set up with sliding slot, sliding block is slidably arranged in sliding slot, the lower part rotatable connection of a sliding slot has screw rod, the top of screw rod penetrates sliding block and frame and extends to the outside of frame in proper order, the top fixedly connected with rotating disc of screw rod. The utility model, through the height of supporting frame of screw column adjustment supporting mechanism, make supporting cylinder and press roll feeding end keep horizontal, a plurality of supporting cylinders form rolling support, reduce the frictional resistance when board conveying, prevent the bending of board because of dead weight, guarantee the flatness of surface after calendering.

Description

Technical Field

[0001] This utility model relates to the field of plastic sheet processing equipment, specifically to a surface calendering device for plastic sheets after hot pressing. Background Technology

[0002] Plastic sheets are sheets made of plastic (mainly high molecular polymers). The main raw materials include synthetic resins and auxiliary materials such as fillers and plasticizers. They are processed and shaped through processes such as extrusion and calendering. They have properties such as wear resistance, corrosion resistance, and water resistance. According to their composition, they can be divided into types such as ABS, PVC, PE, and PP. Among them, ABS has both toughness and rigidity, PVC is resistant to chemical corrosion, PE has high chemical stability, and PP is environmentally friendly, safe, and resistant to high temperatures.

[0003] With the expansion of the application fields of plastic sheets, the market requirements for their surface flatness and gloss are constantly increasing. Plastic sheets after hot pressing need to be calendered to improve surface quality.

[0004] A search revealed a utility model patent, CN223370158U, for a three-roll calendering machine for producing foamed boards. The machine includes a base, a housing fixedly connected to the top of the base, an upper pressure roller rotatably connected to the inner wall of the housing via bearings, a foamed board body attached to the bottom of the upper pressure roller, a lower pressure roller attached to the bottom of the foamed board body, and a leveling mechanism above the base. This utility model relates to the field of foamed board production and processing technology. It achieves the straightening and pressing of the foamed board body by the upper and lower pressure plates, resulting in a smooth and flat surface. This solves the problem of existing calendering machines having large uneven areas on the glossy surface of the foamed board, where the contact area between the commonly used hot and pressure rollers and the foamed board is small, leading to an insufficiently smooth and flat glossy surface and reduced product quality.

[0005] The aforementioned patents lack adjustable support structures, which makes it difficult to ensure the flatness of the sheet material during transport and can easily cause the sheet material to sag due to its own weight, resulting in uneven local calendering.

[0006] Therefore, it is necessary to invent a surface calendering device for hot-pressing plastic sheets to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a surface calendering device for plastic sheets after hot pressing. By using a rolling support mechanism to assist in conveying the sheet, the device ensures stable sheet conveying and solves the problem of uneven calendering caused by easy bending of the sheet during conveying in the prior art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a surface calendering device for hot-pressing plastic sheets, comprising a base, a frame fixedly connected to the top of the base, two pressure rollers spaced vertically on the inner side of the frame, sliding blocks rotatably connected to both ends of the two pressure rollers, sliding grooves provided on the front and back of the frame, the sliding blocks slidably disposed in the sliding grooves, a lead screw rotatably connected to the lower part of one of the sliding grooves, the top end of the lead screw passing through the sliding block and the frame and extending to the outside of the frame, a rotating disk fixedly connected to the top end of the lead screw, a limiting mechanism for cooperating with the rotating disk fixedly installed on the top of the frame, and support mechanisms provided on both sides of the top of the base.

[0009] The limiting mechanism includes a limiting frame, the bottom of which is fixedly connected to the top of the frame. A pull rod is connected through the limiting frame, and a pull handle is fixedly connected to the top of the pull rod. A limiting plate is fixedly connected to the bottom of the pull rod. Limiting rods are fixedly installed on both sides of the bottom of the limiting plate, and the bottom ends of the limiting rods penetrate the rotating disk and extend into the interior of the rotating disk.

[0010] Guide rods are fixedly connected to both sides of the top of the limiting plate. The top of the guide rods passes through the limiting frame and extends to the outside of the limiting frame. A spring is fixedly connected between the limiting frame and the side opposite to the limiting plate and on the surface of the guide rod.

[0011] The support mechanism includes a threaded column, the bottom end of which is rotatably connected to the top of the base. A threaded sleeve is threaded onto the threaded column, and a support frame is fixedly connected to the top of the threaded sleeve. Multiple support cylinders are rotatably connected to the inner cavity of the support frame.

[0012] A connecting cylinder is fixedly connected to the surface of the threaded sleeve, and guide blocks are fixedly connected to both sides of the connecting cylinder. A guide rod is connected through the guide block, and the bottom end of the guide rod is fixedly connected to the top of the base.

[0013] A rotating handle is fixedly connected to the lower part of the surface of the threaded column.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. Through the cooperation of the lead screw and the sliding block, the rotating disk can drive the two pressure rollers to rise and fall smoothly, which is suitable for plastic sheets of different thicknesses. The limiting mechanism can fix the rotating disk through the limiting rod to prevent the pressure rollers from shifting during the calendering process. The height of the support frame can be adjusted by the threaded column of the support mechanism to keep the support cylinder and the feed end of the pressure roller horizontal. Multiple support cylinders form rolling support, which reduces the frictional resistance during the conveying of the sheet, prevents the sheet from bending due to its own weight, and ensures the flatness of the surface after calendering. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the support mechanism structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Base; 2. Frame; 3. Pressure roller; 4. Sliding block; 5. Sliding groove; 6. Lead screw; 7. Rotating disk; 8. Limiting mechanism; 81. Limiting frame; 82. Pull rod; 83. Pull handle; 84. Limiting disc; 85. Limiting rod; 86. Guide rod; 87. Spring; 9. Supporting mechanism; 91. Threaded column; 92. Threaded sleeve; 93. Supporting frame; 94. Supporting cylinder; 95. Connecting cylinder; 96. Guide block; 97. Guide rod; 98. Rotating handle. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-4 The device for surface calendering of plastic sheet after hot pressing is shown, including a base 1, a frame 2 fixedly connected to the top of the base 1, two pressure rollers 3 arranged vertically and vertically on the inner side of the frame 2, and sliding blocks 4 rotatably connected to both ends of the two pressure rollers 3. Sliding grooves 5 are opened on the front and back of the frame 2, and the sliding blocks 4 are slidably arranged in the sliding grooves 5. A lead screw 6 is rotatably connected to the lower part of one sliding groove 5. The top end of the lead screw 6 passes through the sliding block 4 and the frame 2 in sequence and extends to the outside of the frame 2. A rotating disk 7 is fixedly connected to the top end of the lead screw 6. A limiting mechanism 8 that cooperates with the rotating disk 7 is fixedly installed on the top of the frame 2. Support mechanisms 9 are provided on both sides of the top of the base 1.

[0025] The surface of the lead screw 6 is provided with threads in opposite directions, and the sliding block 4 is provided with threads that cooperate with the lead screw 6. By rotating the lead screw 6, the two sliding blocks 4 are driven to move away from each other or move closer to each other.

[0026] The limiting mechanism 8 includes a limiting frame 81, the bottom of which is fixedly connected to the top of the frame 2. A pull rod 82 is connected through the limiting frame 81. A pull handle 83 is fixedly connected to the top of the pull rod 82. A limiting plate 84 is fixedly connected to the bottom of the pull rod 82. Limiting rods 85 are fixedly installed on both sides of the bottom of the limiting plate 84. The bottom end of the limiting rod 85 passes through the rotating plate 7 and extends into the interior of the rotating plate 7.

[0027] Guide rods 86 are fixedly connected to both sides of the top of the limiting plate 84. The top of the guide rods 86 passes through the limiting frame 81 and extends to the outside of the limiting frame 81. A spring 87 is fixedly connected between the limiting frame 81 and the side opposite to the limiting plate 84 and on the surface of the guide rods 86.

[0028] The rotating disk 7 has a circular array of limiting holes that cooperate with the limiting rod 85;

[0029] The support mechanism 9 includes a threaded column 91, the bottom end of which is rotatably connected to the top of the base 1. A threaded sleeve 92 is threadedly connected to the threaded column 91, and a support frame 93 is fixedly connected to the top of the threaded sleeve 92. Multiple support cylinders 94 are rotatably connected to the inner cavity of the support frame 93.

[0030] The sheet metal is supported by a rolling support cylinder 94 to prevent it from bending due to its own weight.

[0031] A connecting sleeve 95 is fixedly connected to the surface of the threaded sleeve 92. Guide blocks 96 are fixedly connected to both sides of the connecting sleeve 95. A guide rod 97 is connected through the guide block 96. The bottom end of the guide rod 97 is fixedly connected to the top of the base 1.

[0032] The guide block 96 has an opening that works with the guide rod 97, and the threaded sleeve 92 is guided to move up and down through the guide block 96 and the guide rod 97.

[0033] A rotating handle 98 is fixedly connected to the lower part of the surface of the threaded column 91, and the threaded column 91 can be rotated by rotating the rotating handle 98.

[0034] The working principle of this practical application is as follows:

[0035] When adjusting the gap between the pressure rollers, pull the handle 83 upward to raise the limiting plate 84 and compress the spring 87, so that the limiting rod 85 disengages from the rotating plate 7. Rotate the rotating plate 7, and the screw 6 will rotate accordingly, causing the sliding block 4 to move up and down along the sliding groove 5, thereby adjusting the gap between the two pressure rollers 3. After the gap is adjusted, release the handle 83, the spring 87 will reset and push the limiting plate 84 downward, so that the limiting rod 85 is inserted into the rotating plate 7 to fix the position of the pressure rollers.

[0036] When adjusting the support height, rotate the rotating handle 98 to drive the threaded column 91 to rotate. The threaded sleeve 92 rises and falls along the threaded column 91, while the guide block 96 slides along the guide rod 97 to ensure that the support frame 93 rises and falls smoothly. Adjust the support cylinder 94 to be flush with the feed end of the pressure roller 3. The plate is then conveyed through the support cylinder 94 to the space between the pressure rollers for surface polishing.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A surface calendering device for hot-pressing plastic sheets, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a frame (2). Two pressure rollers (3) are arranged at intervals on the inner side of the frame (2). Sliding blocks (4) are rotatably connected to both ends of the two pressure rollers (3). Sliding grooves (5) are opened on the front and back of the frame (2). The sliding blocks (4) are slidably arranged in the sliding grooves (5). A lead screw (6) is rotatably connected to the lower part of one of the sliding grooves (5). The top end of the lead screw (6) passes through the sliding block (4) and the frame (2) in sequence and extends to the outside of the frame (2). A rotating disk (7) is fixedly connected to the top end of the lead screw (6). A limiting mechanism (8) that works with the rotating disk (7) is fixedly installed on the top of the frame (2). Support mechanisms (9) are provided on both sides of the top of the base (1).

2. The surface calendering device for plastic sheets after hot pressing according to claim 1, characterized in that: The limiting mechanism (8) includes a limiting frame (81), the bottom of which is fixedly connected to the top of the frame (2), a pull rod (82) is connected through the limiting frame (81), a pull handle (83) is fixedly connected to the top of the pull rod (82), a limiting plate (84) is fixedly connected to the bottom of the pull rod (82), and limiting rods (85) are fixedly installed on both sides of the bottom of the limiting plate (84). The bottom end of the limiting rod (85) passes through the rotating disk (7) and extends into the interior of the rotating disk (7).

3. The surface calendering device for plastic sheets after hot pressing according to claim 2, characterized in that: Guide rods (86) are fixedly connected to both sides of the top of the limiting plate (84). The top of the guide rod (86) passes through the limiting frame (81) and extends to the outside of the limiting frame (81). A spring (87) is fixedly connected between the limiting frame (81) and the side opposite to the limiting plate (84) and on the surface of the guide rod (86).

4. The surface calendering device for plastic sheets after hot pressing according to claim 1, characterized in that: The support mechanism (9) includes a threaded column (91), the bottom end of which is rotatably connected to the top of the base (1), a threaded sleeve (92) is threadedly connected to the threaded column (91), a support frame (93) is fixedly connected to the top of the threaded sleeve (92), and a plurality of support cylinders (94) are rotatably connected to the inner cavity of the support frame (93).

5. The surface calendering device for plastic sheets after hot pressing according to claim 4, characterized in that: A connecting sleeve (95) is fixedly connected to the surface of the threaded sleeve (92). Guide blocks (96) are fixedly connected to both sides of the connecting sleeve (95). A guide rod (97) is connected through the guide block (96). The bottom end of the guide rod (97) is fixedly connected to the top of the base (1).

6. The surface calendering device for plastic sheets after hot pressing according to claim 5, characterized in that: A rotating handle (98) is fixedly connected to the lower part of the surface of the threaded column (91).

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